Academic literature on the topic 'SLRT'

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Journal articles on the topic "SLRT"

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Lyra Bumantara Syarif. "STRATEGI PERWUJUDAN EFEKTIVITAS PELAYANAN PADA SISTEM LAYANAN DAN RUJUKAN TERPADU GEMA MATRA DAN PUSAT KESEJAHTERAAN SOSIAL DALAM RANGKA MENDUKUNG UPAYA PENANGGULANGAN KEMISKINAN DI KABUPATEN SEMARANG." Media Informasi Penelitian Kabupaten Semarang 3, no. 1 (2020): 116–31. http://dx.doi.org/10.55606/sinov.v3i1.78.

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Sistem Layanan dan Rujukan Terpadu (SLRT) dan Pusat Kesejahteraan Sosial (Puskesos) memiliki peran yang cukup strategis dalam mendukung upaya penanggulangan kemiskinan daerah, yaitu sebagai portal berbagai pelayanan Program Perlindungan Sosial dan Penanggulangan Kemiskinan (PSPK) bagi warga masyarakat miskin dan rentan. Guna mewujudkan penyelenggaraan SLRT dan Puskesos yang mampu menjawab tantangan kebutuhan pengentasan kemiskinan di Kabupaten Semarang, diperlukan upaya pengendalian agar penyelenggaraan pelayanan SLRT dan Puskesos tetap berada pada rel/jalur yang telah ditetapkan (right on the track) yang salah satunya ditempuh dengan melaksanakan pengukuran atas efektivitas pelayanan yang dilaksanakan pada SLRT dan Puskesos. Berdasarkan hasil pengukuran, dapat diketahui bahwa secara umum efektivitas pelayanan SLRT dan Puskesos di Kabupaten Semarang sudah cukup baik. Melalui pengukuran mutu/kualitas kinerja penyelenggaraan layanan SLRT dan Puskesos dapat diketahui capaian pada 2 (dua) indikator, yaitu : IKM pengguna layanan/penerima manfaat SLRT dan IKM aparatur Desa bernilai sangat baik. Dengan demikian, pengguna layanan/penerima manfaat maupun pemangku kepentingan sudah cukup puas dengan kinerja pelayanan yang diberikan oleh SLRT dan Puskesos. Sementara 1 (satu) indikator lainnya, yaitu nilai Indeks Penilaian Penyelenggara Layanan SLRT dan Puskesos secara umum menghasilkan capaian kurang baik, sehingga dapat diidentifikasi bahwa masalah/kendala/hambatan jutru didapat dari sisi internal penyelenggara pelayanan SLRT dan Puskesos. Memperhatikan hasil identifikasi masalah tersebut,dapat direkomendasikan sebanyak 3 (tiga) strategi utama yang sebaiknya ditempuh oleh Pemerintah Kabupaten Semarang untuk membenahi kinerja internal penyelenggara layanan SLRT dan Puskesos agar dapat berkontribusi maksimal guna mewujudkan efektivitas pelayanan SLRT dan Puskesos dalam rangka mendukung upaya Penanggulangan Kemiskinan di Kabupaten Semarang, yaitu : Strategi Pengembangan, Strategi Integrasi dan Strategi Penetrasi.
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Anjani, Firda Dwi, Binahayati Rusyidi, and Muhammad Fedryansyah. "PENERAPAN PRINSIP HAM PADA SISTEM LAYANAN DAN RUJUKAN TERPADU (SLRT) DI KABUPATEN BANDUNG." EMPATI: Jurnal Ilmu Kesejahteraan Sosial 12, no. 2 (2023): 54–64. http://dx.doi.org/10.15408/empati.v12i2.34066.

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Abstract. The implementation of SLRT must seek the application of legal, responsive, transparent, participatory, gender equality, accountable, objective, and sustainable principles. Bandung Regency is an area that has held SLRT since 2016 until now and has received Best Practice achievements from the Ministry of Social Affairs. In fact, the characteristics of the region can be a challenge for the implementation of the SLRT implementation principle. Namely, the male population is greater than the female population, the area is large and consists of lowlands and highlands, and the 69 OPDs have their own programs and target recipients. The researcher wants to know how the Bandung Regency SLRT applies the principles of its implementation by using a human rights-based approach theory. This is because there is harmony between the principles of implementing SLRT and human rights principles in the form of participation, accountability, non-discrimination and equity. Information regarding the implementation of SLRT Bandung Regency is presented using qualitative data, sourced from interviews, non-participant observation, and literature studies. The findings of the study state that the implementation of SLRT in Bandung Regency shows active community participation and differences in treatment in the delivery of services that support substantive gender equality. On the other hand, not all OPDs in Bandung Regency have succeeded in integrating their programs and program beneficiary targets with SLRT. Thus, service delivery is not fully sustainable. However, this is not a form of government reluctance, but rather due to limited resources. Keywords: Implementation of SLRT; Human Rights-Based Approach; Human Rights Principle. Abstrak. Penyelenggaraan SLRT harus mengupayakan penerapan asas legal, responsif, transparan, partisipatif, kesetaraan gender, akuntabel, objektif, dan berkelanjutan. Kabupaten Bandung merupakan daerah yang telah menyelenggarakan SLRT sejak tahun 2016 hingga saat ini dan mendapatkan prestasi Best Practice dari Kementerian Sosial. Padahal, karakteristik wilayahnya dapat menjadi tantangan diterapkannya asas penyelenggaraan SLRT. Yaitu, jumlah penduduk laki-laki yang lebih banyak dibandingkan perempuan, wilayah yang luas dan terdiri atas dataran rendah dan tinggi, serta 69 OPD yang memiliki program dan sasaran penerimanya masing-masing. Peneliti ingin mengetahui bagaimana SLRT Kabupaten Bandung menerapkan asas penyelenggaraannya dengan menggunakan teori pendekatan berbasis HAM. Pasalnya, terdapat keselarasan antara asas penyelenggaraan SLRT dengan prinsip HAM berupa partisipasi, akuntabilitas, non diskriminasi dan ekuitas. Informasi mengenai penyelenggaraan SLRT Kabupaten Bandung disajikan menggunakan data kualitatif, bersumber dari kegiatan wawancara, observasi non partisipan, dan studi literatur. Hasil temuan penelitian menyatakan penyelenggaraan SLRT Kabupaten Bandung menunjukkan upaya partisipasi aktif masyarakat dan perbedaan perlakuan dalam penyelenggaraan layanan yang mendukung kesetaraan substantif gender. Di sisi lain, belum semua OPD di Kabupaten Bandung berhasil mengintegrasikan program dan sasaran penerima programnya dengan SLRT. Sehingga, penyelenggaraan layanan belum sepenuhnya berkelanjutan. Namun, hal tersebut bukan merupakan bentuk keengganan pemerintah, melainkan karena keterbatasan sumber daya. Kata kunci: Penyelenggaraan SLRT; Pendekatan Berbasis HAM; Prinsip HAM
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Putri Susanti, Niluh. "Evaluasi Pelaksanaan Sistem Layanan dan Rujukan Terpadu (SLRT) dalam Mewujudkan Kesejahteraan Sosial di kota Sukabumi Provinsi Jawa Barat." Jurnal Sosial Teknologi 1, no. 3 (2021): 185–99. http://dx.doi.org/10.36418/jurnalsostech.v1i3.39.

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Penelitian ini dilatarbelakangi dari pelaksanaan program SLRT (Sistem Layanan dan Rujukan Terpadu) yang merupakan program lanjutan dari Pandu Gempita (Pelayanan Terpadu dan Gerakan Kota/Kabupaten Sejahtera) di Kota Sukabumi. Program yang telah berjalan sejak tahun 2014 membawa dampak positif meski presentase penduduk miskin yang dilayani belum maksimal.
 Penelitian ini dilakukan untuk mengetahui bagaimana evaluasi pelaksanaan SLRT, faktor-faktor yang mempengaruhi pelaksanaan SLRT, dan rumusan strategi yang akan digunakan. Teori yang digunakan dalam penelitian adalah teori evaluasi William N. Dunn dan menggunakan metode penelitian kualitatif dengan teknik analisis ASOCA dan tes litmus.
 Berdasarkan hasil penelitian tersebut, dapat disimpulkan bahwa hasil evaluasi dalam pelaksanaan SLRT ini yakni 1) pelayanan SLRT sejak tahun 2015 hingga tahun 2018 mengalami peningkatan terutama pada tingkat produksi dan perkembangan pelayanan dikarenakan kenaikan jumlah masyarakat yang mendapat pelayanan SLRT serta alur pelayanan yang mudah dipahami oleh masyarakat awam, 2) pelayanan SLRT berjalan dengan efisien karena penggunaan APBD sebagai sumber anggaran kegiatan digunakan dengan baik sehingga masyarakat penerima pelayanan tidak perlu membayar biaya administrasi pelayanan, 3) SLRT sudah cukup membantu warga miskin dan dapat mencapai suatu masalah sosial yang terjadi di Kota Sukabumi, 4) asas pemerataan pada program ini sudah berjalan dengan baik dan dapat dirasakan ke seluruh warga miskin yang sudah terdaftar dalam Basis Data Terpadu., 5) kualitas pelayanan yang dilaksanakan oleh UPT SLRT Repeh Rapih mengalami perkembangan signifikan dan peningkatan yang sangat positif sejak program SLRT diterapkan pada tahun 2017 hingga saat ini, dan 6) program SLRT ini dapat menjawab keinginan masyarakat miskin dan rentan miskin untuk mendapatkan pelayanan publik yang layak secara tepat.
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Putri Susanti, Niluh. "Evaluasi Pelaksanaan Sistem Layanan dan Rujukan Terpadu (SLRT) dalam Mewujudkan Kesejahteraan Sosial di kota Sukabumi Provinsi Jawa Barat." Jurnal Sosial Teknologi 1, no. 3 (2021): 185–99. http://dx.doi.org/10.59188/jurnalsostech.v1i3.39.

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Penelitian ini dilatarbelakangi dari pelaksanaan program SLRT (Sistem Layanan dan Rujukan Terpadu) yang merupakan program lanjutan dari Pandu Gempita (Pelayanan Terpadu dan Gerakan Kota/Kabupaten Sejahtera) di Kota Sukabumi. Program yang telah berjalan sejak tahun 2014 membawa dampak positif meski presentase penduduk miskin yang dilayani belum maksimal.
 Penelitian ini dilakukan untuk mengetahui bagaimana evaluasi pelaksanaan SLRT, faktor-faktor yang mempengaruhi pelaksanaan SLRT, dan rumusan strategi yang akan digunakan. Teori yang digunakan dalam penelitian adalah teori evaluasi William N. Dunn dan menggunakan metode penelitian kualitatif dengan teknik analisis ASOCA dan tes litmus.
 Berdasarkan hasil penelitian tersebut, dapat disimpulkan bahwa hasil evaluasi dalam pelaksanaan SLRT ini yakni 1) pelayanan SLRT sejak tahun 2015 hingga tahun 2018 mengalami peningkatan terutama pada tingkat produksi dan perkembangan pelayanan dikarenakan kenaikan jumlah masyarakat yang mendapat pelayanan SLRT serta alur pelayanan yang mudah dipahami oleh masyarakat awam, 2) pelayanan SLRT berjalan dengan efisien karena penggunaan APBD sebagai sumber anggaran kegiatan digunakan dengan baik sehingga masyarakat penerima pelayanan tidak perlu membayar biaya administrasi pelayanan, 3) SLRT sudah cukup membantu warga miskin dan dapat mencapai suatu masalah sosial yang terjadi di Kota Sukabumi, 4) asas pemerataan pada program ini sudah berjalan dengan baik dan dapat dirasakan ke seluruh warga miskin yang sudah terdaftar dalam Basis Data Terpadu., 5) kualitas pelayanan yang dilaksanakan oleh UPT SLRT Repeh Rapih mengalami perkembangan signifikan dan peningkatan yang sangat positif sejak program SLRT diterapkan pada tahun 2017 hingga saat ini, dan 6) program SLRT ini dapat menjawab keinginan masyarakat miskin dan rentan miskin untuk mendapatkan pelayanan publik yang layak secara tepat.
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Krishnamoorthy, K., and Evrim Oral. "Standardized likelihood ratio test for comparing several log-normal means and confidence interval for the common mean." Statistical Methods in Medical Research 26, no. 6 (2015): 2919–37. http://dx.doi.org/10.1177/0962280215615160.

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Standardized likelihood ratio test (SLRT) for testing the equality of means of several log-normal distributions is proposed. The properties of the SLRT and an available modified likelihood ratio test (MLRT) and a generalized variable (GV) test are evaluated by Monte Carlo simulation and compared. Evaluation studies indicate that the SLRT is accurate even for small samples, whereas the MLRT could be quite liberal for some parameter values, and the GV test is in general conservative and less powerful than the SLRT. Furthermore, a closed-form approximate confidence interval for the common mean of several log-normal distributions is developed using the method of variance estimate recovery, and compared with the generalized confidence interval with respect to coverage probabilities and precision. Simulation studies indicate that the proposed confidence interval is accurate and better than the generalized confidence interval in terms of coverage probabilities. The methods are illustrated using two examples.
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Torino, Giovanni, Michele Ilari, Edoardo Bindi, Francesca Mariscoli, and Giovanni Cobellis. "Liver Resection Using Saline-Linked Radiofrequency Technology in an Infant with Congenital Hepatoblastoma." Children 9, no. 3 (2022): 418. http://dx.doi.org/10.3390/children9030418.

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We herein report a case of giant congenital hepatoblastoma in a 3-month-old male treated with neoadjuvant chemotherapy and hepatic resection. After considerable reduction of the tumor with chemotherapy, a right bloodless hemihepatectomy using saline-linked radiofrequency technology (SLRT) and without clamping of the hepatic pedicle was performed. Intraoperative blood loss was minimal, and consequently, no blood transfusions were required. The surgery lasted 140 min, and SLRT was used for a total of 60 min. No complications were observed during or after the surgery. In conclusion, congenital hepatoblastoma is a very rare cancer for which surgery is an essential therapeutic step, and in our presented case, we showed that SLRT allowed for a safe and effective bloodless liver resection.
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Feng, Changyong, Hongyue Wang, and Xin M. Tu. "Power Loss of Stratified Log-Rank Test in Homogeneous Samples." International Journal of Quality, Statistics, and Reliability 2010 (March 7, 2010): 1–4. http://dx.doi.org/10.1155/2010/942184.

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We study the loss of power of the stratified log-rank test (SLRT) compared to the unstratified log-rank test (ULRT) in the case of a large number of strata with relatively a small number of stratum sizes in terms of the asymptotic distributions of test statistics under local alternatives. The SLRT tends to lose information due to overstratification. It is better to test the homogeneity among strata before using the stratified log-rank test.
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Nasby-Lucas, Nicole, and Michael L. Domeier. "Impact of satellite linked radio transmitting (SLRT) tags on the dorsal fin of subadult and adult white sharks (Carcharodon carcharias)." Bulletin of Marine Science 96, no. 1 (2020): 23–30. http://dx.doi.org/10.5343/bms.2019.0019.

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Satellite linked radio transmitting (SLRT) tags provide long-term, high accuracy, near real-time tracking data for marine wildlife. Adult white sharks (Carcharodon carcharias Linnaeus, 1758) in the northeastern Pacific at both Guadalupe Island, Mexico and Southeast Farallon Island, USA were tagged with SLRT oval and inline finmout tags. These tags provided up to 7.4 yrs of tracking data. A previous study showed structural dorsal fin damage for SLRT tagged juvenile and subadult white sharks off South Africa. Sharks tagged in the northeastern Pacific were resighted between 1 and 11 yrs post tagging and included 10 adults and 2 subadults. Sharks that were resighted did not exhibit significant fin deformation, although in one case the oval finmount tag did cause bending of the dorsal fin due to tag shape, weight, and placement of the tag on the dorsal fin. Four inline tags came off after deployments of at least 2.2 to 3.7 yrs (based on date of last message received), and two of these caused a tear to the trailing edge of the dorsal fin upon release. Overall, SLRT tags provided long-term tracking data and there was no apparent impact on the behavior or migration cycles of the sharks. Serious dorsal fin deformation seems to occur in the case of juvenile and subadult white sharks where the fin is rapidly growing and thus for tracking juvenile white sharks, alternate methods should be considered.
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Buranapanitkit, B., K. Tautakul, A. Lim, A. Geater, and U. Chomchan. "CLINICAL PREDICTORS FOR OUTCOME OF TREATMENT OF LUMBAR HERNIATED NUCLEUS PALPOSUS." Journal of Musculoskeletal Research 07, no. 01 (2003): 61–69. http://dx.doi.org/10.1142/s0218957703000971.

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Herniated nucleus palposus is a common and important cause of low back pain. Despite over 90% of the patients responding to conservative treatment, some patients still need operation. This study aimed to analyze the clinical predictors for the outcome of conservative treatment in herniated nucleus palposus. Two hundred and fifty-one patients who were diagnosed as lumbar herniated nucleus palposus and admitted to Prince of Songkla University during the period of 1995–2000 were included in the study. Patients who had absolute indications for surgery or had previous back surgery were excluded. Data were collected on demographic characteristics (age, sex, occupation, level of study, marital status), patient symptoms (including duration, characteristic and severity of pain) and result of physical examination (including result of straight leg raising test (SLRT), cross SLRT, motor power, sensory deficit and reflex). The mean age of the patients was 38 years and the mean duration of pain was 4.1 months. Eighty percent of the patients had positive SLRT and abnormal neurological function was found in 73%. One hundred and eighty-six patients underwent surgery owing to failure of conservative treatment. From multivariate logistic analysis, five independent factors affecting failure of conservative treatment of herniated nucleus palposus were pain intensity, duration of symptoms, positive cross SLRT, grade of muscle power and number of dermatome deficit. When constructing the parameters into a scoring system, we found that if the patient had a score less than 45, 80% of them respond to conservative treatment, in contrast to those who scored more than 65, the probability of conservative failure was 80%. This study implies that clinical predictors can be used for determining probability of conservative failure in herniated nucleus palposus.
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Kurt, Vedat, Ozgen Aras, and Nihal Buker. "Comparison of conservative treatment with and without neural mobilization for patients with low back pain: A prospective, randomized clinical trial." Journal of Back and Musculoskeletal Rehabilitation 33, no. 6 (2020): 969–75. http://dx.doi.org/10.3233/bmr-181241.

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BACKGROUND: Low back pain (LBP) is a common problem that causes pain, disability, and gait and balance problems. Neurodynamic techniques are used in the treatment of LBP. OBJECTIVE: The aim of this study was to compare the effects of electrotherapy and neural mobilization on pain, functionality, gait, and balance in patients with LBP. MATERIALS AND METHODS: A total of 41 patients were randomly assigned to either the neural mobilization group (NMG, n= 20) or electrotherapy group (ETG, n= 21). Assessment tools used were Visual Analogue Scale (VAS) for pain, Oswestry Disability Index (ODI) for functionality, straight leg raise test (SLRT) for neural involvement, and baropedographic platform (Zebris FDM-2TM) for gait and static balance measurements. RESULTS: Both groups showed a significant decrease in pain and functional disability, while only the NMG group showed a significant increase in SLRT scores (p< 0.05). However, there were no statistically significant pre- to post-treatment changes in gait or static balance parameters in either group (p< 0.05). CONCLUSION: Neural mobilization was effective in reducing pain and improving functionality and SLRT performance in patients with LBP, but induced no change in gait and static balance parameters. Neural mobilization may be used as self-practice to supplement standard treatment programs.
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Dissertations / Theses on the topic "SLRT"

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Stefanelli, Romain. "Approche mécanistique en radioécologie : processus d'accumulation de radionucléides dans les mollusques bivalves." Electronic Thesis or Diss., Université Côte d'Azur, 2024. http://www.theses.fr/2024COAZ5001.

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Les incidents nucléaires, à l'instar de Fukushima en 2011, soulèvent des préoccupations d'ordre géopolitique, économique et d'acceptation publique. Les océans servent de réceptacle aux pollutions terrestres, notamment aux radionucléides d'origine naturelle (provenant de l'érosion et du ruissellement) et d'origine anthropogénique (issus des essais nucléaires et des rejets nucléaires industriels). La compréhension de la spéciation des radionucléides dans le milieu marin revêt donc une importance capitale pour évaluer leur impact environnemental. Certains organismes marins, notamment les moules, ont la capacité d'accumuler ces radionucléides. L'étude de la spéciation in vivo est fondamentale pour appréhender l'accumulation, la biodisponibilité et la toxicité de ces éléments, ainsi que leur incidence sur l'écosystème marin. Au cours de cette thèse, deux radionucléides ont été examinés : le 60Co, un émetteur gamma provenant de l'activation dans les centrales nucléaires, et l'uranium, un actinide naturellement présent dans le milieu marin, servant de modèle pour les actinides lourds. La glande digestive joue un rôle majeur dans les mécanismes de leurs détoxification chez les mollusques, permettant la mobilisation des métaux et participant aux processus de détoxification. Plusieurs métabolites, notamment les métallothionéines, des protéines de faible poids moléculaire possédant une forte affinité pour les ions métalliques en raison de la présence de groupes thiols, sont impliqués dans ces processus. Le byssus, quant à lui, revêt une grande importance pour les mollusques, leur permettant de s'ancrer sur des supports. Les fils de byssus, principalement composés de collagène, présentent des propriétés adhésives qui suscitent l'intérêt des chercheurs. Des protéines spécifiques, appelées "protéines du pied de la moule" (mfp), contiennent une quantité significative de DOPA (l-3,4-dihydroxyphénylalanine), allant jusqu'à 15 % moléculaire, au niveau des fils. La DOPA participe à la complexation d'ions métalliques, tels que le vanadium et le fer, influençant les propriétés mécaniques des fils de byssus. Ce travail a permis de quantifier le cobalt et l'uranium à l'aide de techniques telles que la spectrométrie de masse à plasma à couplage inductif (ICP-MS) et la spectrométrie gamma dans les organes, offrant des informations sur leur répartition au sein de différents compartiments subcellulaires. Des outils d'imagerie ont permis de localiser ces métaux à diverses échelles biologiques, tels que les organes par la fluorescence des rayons X (-XRF) et l'émission de rayons X induite par des particules (PIXE) et les cellules par spectrométrie de masse à ions secondaires (SIMS), ont fourni des renseignements sur leur distribution et leur spéciation. La spéciation a été étudiée au moyen de la spectroscopie d'absorption des rayons X (XAS) et de la spectrofluorimétrie laser à résolution temporelle (SLRT), cette dernière a été utilisé exclusivement pour l'uranium.Cette thèse a permis d'associer quantification, imagerie et spéciation pour mieux comprendre le transfert de l'uranium et du cobalt chez les mollusques bivalves<br>Nuclear incidents, such as the one in Fukushima in 2011, raise concerns in terms of geopolitics, economics, and public acceptance. Oceans act as receptacles for terrestrial pollution, including radionuclides of both natural origin (resulting from erosion and runoff) and anthropogenic origin (from nuclear tests and industrial nuclear releases). Therefore, understanding the speciation of radionuclides in the marine environment is of paramount importance to assess their environmental impact. Certain marine organisms, notably mussels, have the ability to accumulate these radionuclides. In vivo speciation studies are fundamental in comprehending the accumulation, bioavailability, and toxicity of these elements and their impact on the marine ecosystem. In the course of this thesis, two radionuclides were examined: 60Co, a gamma emitter originating from activation in nuclear power plants, and uranium, a naturally occurring actinide in the marine environment, serving as a model for heavy actinides. The digestive gland plays a significant role in the detoxification mechanisms in mollusks, allowing for the mobilization of metals and participating in detoxification processes. Several metabolites, including metallothioneins, low-molecular-weight proteins with a strong affinity for metal ions due to the presence of thiol groups, are involved in these processes. The byssus is of great importance to mollusks, enabling them to anchor onto surfaces. Byssal threads, primarily composed of collagen, exhibit adhesive properties that have piqued the interest of researchers. Specific proteins, known as "mussel foot proteins" (mfps), contain a significant amount of DOPA (l-3,4-dihydroxyphenylalanine), up to 15% molecular content, in the threads. DOPA plays a role in the complexation of metal ions, such as vanadium and iron, influencing the mechanical properties of byssal threads.This work allowed for the quantification of cobalt and uranium using techniques such as inductively coupled plasma mass spectrometry (ICP-MS) and gamma spectrometry in various organs, providing information on their distribution within different subcellular compartments. Imaging tools were used to locate these metals at various biological scales, including organs through X-ray fluorescence (μ-XRF) and particle-induced X-ray emission (PIXE), as well as cells through secondary ion mass spectrometry (SIMS), yielding insights into their distribution and speciation. Speciation was studied using X-ray absorption spectroscopy (XAS), and time-resolved laser-induced spectrofluorimetry (SLRT), the latter being exclusively employed for uranium.This thesis has integrated quantification, imaging, and speciation to gain a better understanding of the transfer of uranium and cobalt in bivalve mollusks
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Lourenço, Valérie. "Etude de la spéciation des radionucléides avec les molécules d'intérêt biologique par approche spectrométrique." Phd thesis, Université Paris Sud - Paris XI, 2007. http://tel.archives-ouvertes.fr/tel-00179617.

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Les mécanismes de complexation et d'accumulation des radionucléides au niveau cellulaire et moléculaire sont complexes et mal connus car les études sur ces sujets sont peu nombreuses. Dans le cadre de cette thèse, nous avons étudié les interactions de l'europium (analogue des actinides trivalents) et d'un actinide : l'uranium (VI), avec des molécules biologiques d'intérêt : les phytochélatines. Leur rôle est de protéger les cellules contre les intrusions de métaux lourds non essentiels (donc toxiques). Ces protéines sont donc susceptibles d'être impliquées dans les mécanismes de séquestration des radionucléides chez le vivant. Elles ont toutefois une structure complexe, c'est pourquoi, afin de mieux comprendre leur réactivité, nous avons étendu nos études aux sous entités qui les constituent (acides aminés et glutathion). <br />Nous avons en particulier déterminé la spéciation en solution (stoechiométrie, structure) ainsi que les constantes d'équilibre associées à la formation de ces espèces. Ces études ont été menées par Spectrofluorimétrie Laser à Résolution Temporelle (SLRT), ElectroSpray-Spectrométrie de Masse (ES-SM), Résonance Magnétique Nucléaire (RMN), spectroscopie Infra-Rouge à Transformée de Fourier (IRTF) et Spectroscopie d'Absorption X (EXAFS). La détermination des constantes d'équilibre nous a permis de conclure que le pouvoir complexant de ces molécules vis-à-vis des radionucléides était modéré (log10K1 < 3, à pH 3 ou 6), les espèces formées sont mononucléaires avec une seule molécule de ligand (1:1). L'interaction se fait via les groupements durs (oxygénés). La complexation directe de l'europium par des molécules de phytochélatines à pH acide a été étudiée conjointement par SLRT et ES-SM. Le pouvoir complexant de ces molécules est bien supérieur à celui du GSH dont elles sont pourtant issues. Outre les travaux menés sur des solutions synthétiques reproduisant les conditions « biologiques » (pH proche de la neutralité, force ionique 0,1 mol/L, etc.), des tests de contamination cellulaire ont été réalisés. La quantification de l'europium intégré a montré que celles-ci sont capables d'incorporer significativement l'europium.
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3

Marang, Laura. "Influence de la matière organique naturelle sur la spéciation des radionucléides en contexte géochimique." Paris, Institut de physique du globe, 2007. https://tel.archives-ouvertes.fr/tel-00418723.

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Dans le cadre de la prévision du devenir des radionucléides (RN) dans l'environnement, l'intérêt s est porté sur les interactions de RN tels que le cobalt (II), l'europium (III) et l'uranium (VI) avec les substances humiques (SH). Le but de ce travail était d aller vers une meilleure compréhension des interactions entre RN et SH ainsi que la prédiction de l'influence des SH sur la spéciation des RN en tenant en compte la compétition avec les cations majeurs Ca(II) et Mg(II). Le modèle NICA-Donnan permet de décrire ces interactions en tenant compte de l'hétérogénéité des SH, des effets électrostatiques et de la compétition entre cations. Le modèle avait été calibré avec un jeu de données extrêmement limité dans le cas des RN. En effet, parmi l'ensemble de techniques de spéciation, peu d entre elles sont adaptées à l'étude des interactions RN-SH en particulier à la mesure de la concentration en métal libre en solution. Dans le cadre de ce travail, nous avons développé et optimisé des techniques de spéciation afin d'acquérir de nouveaux jeux de données, d'étudierl'influence de la compétition sur la spéciation des RN et enfin de tester la capacité du modèle NICADonnan à prédire le comportement des RN en complémentarité avec des données spectroscopiques<br>The principal aim of this work is the study of the influence of natural organic matter, in particularly humic substances (HS), on the speciation of radionuclides (RN). The studied radionuclides are cobalt (II), europium (III) and uranium (VI), with a particular emphasis on the competition with major cations Ca(II) and Mg(II). It has been shown that mobility and bioavailability of a metal are related to its speciation. The NICA-Donnan model describes metal ion binding to NOM: it accounts for NOM chemical heterogeneity, competition during binding and ionic strength effects. However the model has been calibrated with a limited number of experimental data for the RN. Indeed there are only few speciation techniques available for the study of the interactions RN-HS. Within the framework of this study, we have developed and optimised speciation technique (Flux Donnan Membrane Technique and the use of an insolubilised humic acid) in order to acquire new experimental data. The effect of the competition on RN speciation has also been studied, with complementary spectroscopic data. Finally, the model was tested to predict the RN behaviour in laboratory or in situ
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4

Othmane, Guillaume. "Spéciation de l'uranium dans l'environnement : application aux opales de Nopal I (Mexique et aux résidus miniers de Gunnar (Canada)." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2012. http://tel.archives-ouvertes.fr/tel-00833415.

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La compréhension des processus de migration et de piégeage des radionucléides est importante pour prédire leur comportement à proximité des sites de résidus miniers ou pour estimer la sûreté de sites potentiels de stockage de déchets nucléaires à haute activité. La spéciation de l'uranium, influencée par de nombreux facteurs biotiques ou abiotiques, est un paramètre clé pour le contrôle de son transfert dans l'environnement. La spéciation de l'uranium a tout d'abord été étudiée dans les opales du gisement d'uranium de Nopal I (Mexique). Des observations par microscopie électronique en transmission ont révélé la présence de nanocristaux de vorlanite, un rare uranate de calcium cubique de formule CaUO4. Pour la première fois, la vorlanite a été trouvée avec une morphologie cubique en accord avec sa structure. Ces opales ont ensuite été analysées par spectroscopie de luminescence résolue en temps. La comparaison des spectres des opales avec ceux de références synthétisées au laboratoire a indiqué la présence de complexes uranyles monomériques ou polymériques (associés ou non à du calcium ou des phosphates) adsorbés sur la surface interne de l'opale à pH 7-8. Enfin, les pièges naturels de l'uranium ont été déterminés dans les résidus miniers de Gunnar (Canada). L'uranium est majoritairement présent sous forme de complexes uranyles adsorbés sur les octaèdres Fe(O,OH)6 d'(oxyhydr)oxydes de fer ou de chlorite, dans un premier site de stockage. Dans le second, nos résultats suggèrent la présence de coprécipités d'U(VI) avec des (oxyhydr)oxydes de fer. La mobilité de l'uranium à Gunnar est donc contrôlée par des processus d'adsorption/désorption et de dissolution/(co)précipitation
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5

Maloubier, Melody. "Spéciation et bioaccumulation dans un organisme modèle de U, Np et Am en milieu marin." Thesis, Nice, 2015. http://www.theses.fr/2015NICE4101/document.

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Le devenir des radionucléides naturels et anthropogéniques dans l’environnement demeure une préoccupation majeure des sociétés modernes nucléarisées. Parmi les compartiments environnementaux possiblement impactés, l’hydrosphère est ubiquitaire et peut transporter des composés ou éléments sur de très longues distances. L’évènement récent de Fukushima a démontré que le milieu marin pouvait être également directement impacté ce qui amène à des questionnements tant scientifiques que sociétaux. De nombreuses études ont déjà montré que les radionucléides présents dans l’eau de mer peuvent être fortement accumulés par les organismes marins mais pour autant leur spéciation est inconnue. Or cette connaissance est essentielle afin de maîtriser les mécanismes de transfert entre l’hydrosphère et la biosphère et d'évaluer in fine l’impact global sur l’Homme. Dans ce travail, nous avons choisi de déterminer expérimentalement la spéciation de trois actinides dans l’eau de mer dopée : l’uranium(VI), le neptunium(V) et l’américium(III) (via l’analogue europium(III)) en couplant des calculs de spéciation avec les outils spectroscopiques dont la Spectroscopie Laser Résolue en Temps (SLRT) et la Spectroscopie d'Absorption des Rayons X (EXAFS). Puis nous avons étudié les processus d’accumulation sur l’éponge A. cavernicola, choisi ici car considérée comme un biomoniteur de pollution pour les métaux lourds. L’accumulation de l’europium(III), de l’américium(III) et de l’uranium(VI) dans A. cavernicola a donc été investiguée à l'échelle de traces et ultra traces. Pour l'europium, les techniques d'imagerie X et électronique ont permis de localiser l'élément accumulé et d'en préciser la spéciation<br>The fate of natural and anthropogenic radionuclides in the environment remains a major concern in our modern nuclearized societies. Among the environmental compartments, the hydrosphere is ubiquitous and can transport compounds or elements over very long distances. The recent event of Fukushima demonstrated that the marine environment could be directly affected and this raises both scientific and societal questions. Moreover, some studies have already shown that radionuclides present in seawater can be strongly accumulated by marine organisms although their speciation is most of the time unknown. Yet this knowledge is essential to better understand the transfer mechanisms from the hydrosphere to the biosphere and to evaluate their global impact on humans. In this work, we chose to experimentally determine the speciation of three actinides in doped seawater: uranium(VI), neptunium(V) and americium(III) (and the chemical surrogate europium(III)) by coupling speciation modeling with spectroscopic tools among which Time-Resolved Laser-Induced Fluorescence (TRLIF) and X-ray Absorption Spectroscopy (XAS). Then, we have studied the accumulation process in the sponge A. cavernicola, chosen here because it is considered as a biomonitor of heavy metal pollution. The accumulation of europium(III), americium(III) and uranium(VI) in A. cavernicola were investigated at trace and ultra-trace levels. Besides, for europium, X-ray and electronic imaging permit to localize the accumulated element in the sponge and to specify its speciation
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Kouhail, Yasmine. "Influence de la compétition des anions (hydroxydes, carbonates) sur la complexation des lanthanides trivalents par la matière organique naturelle : cas des substances humiques." Sorbonne Paris Cité, 2016. https://hal-cea.archives-ouvertes.fr/tel-01398507.

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L'objectif de cette étude est d'acquérir et affiner les données de complexation pour la compréhension du devenir des lanthanides dans l'environnement où les concentrations en matière organique sont très variables. Cette étude s'est intéressée à la description et la compréhension des interactions entre l'europium(III) et un acide fulvique de Suwannee river (SRFA) comme représentant des substances humiques (SH), et à l'influence des anions principaux présents dans les eaux, c'est-à-dire les ions hydroxydes et carbonates, sur ces interactions. Pour pouvoir comprendre les systèmes ternaires Eu-OH-SRFA et Eu-0O3-SRFA, les systèmes simples Eu-SRFA et Eu-0O3 ont d'abord été investigué par spectrofluorimétrie laser à résolution temporelle (SLRT) pour de larges gammes de pH, force ionique, concentrations en Eu(III), SRFA et CO3. Cette étude a permis de mettre en évidence que les structures des substances humiques sont influencées par la présence de l'Eu(III). Les paramètres NICA-Donnan permettant de décrire la complexation ont été déterminés pour le système simple Eu-SRFA et ont été utilisés pour la compréhension des systèmes ternaires. Des complexes ternaires Eu-0O3-SRFA ont été mis en évidence par SLRT. Des variations de taille des complexes Eu-SRFA en fonction des concentrations en europium et en SRFA ont été présentées, et l'impact de ces variations sur les paramètres du modèle NICA-Donnan a été investigué. Les résultats de ce travail peuvent amener à des questionnements des concepts de modélisation des interactions des cations métalliques avec la matière organique lorsque la concentration varie de façon significative, notamment pour la prise en compte des effets électrostatiques<br>The aim of this study is to acquire and refine complexation data for understanding the fate of lanthanides in the environment where the concentrations of organic matter are highly variable. This study focus on describing and understanding the interactions between the europium(IlI) and a Suwannee River fulvic acid (SRFA) as a representative of humic substances (HS), and the influence of major anions present in natural waters, i. E. Hydroxides and carbonates ions, in these interactions. To understand the ternary systems Eu¬OH-SRFA and Eu-0O3-SRFA, Eu-SRFA and Eu-0O3 binary systems are first investigated by time-resolved luminescence spectroscopy (TRLS) for wide ranges of pH, ionic strength, Eu(III), SRFA and CO3 concentrations. This study shows that the structures of humic substances are influenced by the presence of Eu(III). Interaction constants are determined for the Eu-SRFA binary system and are used for the understanding of the Eu-0O3-SRFA ternary system. Eu-0O3-SRFA ternary complexes are highlighted by SLRT, and an interaction constant has also been proposed in the frame of the NICA-Donnan model. Variations in size of Eu-SRFA complexes as a function of europium and SRFA concentrations are presented, and the impact of these variations on NICA-Donnan parameters is investigated. The results of this work are challenging modeling concepts of metal-HS interactions at various HS concentrations, in particular for the consideration of electrostatic effects
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7

Zhao, Yujia. "Sorption de l’ion uranyle sur la silice en présence d’acides carboxyliques à courte chaine." Thesis, Paris 11, 2012. http://www.theses.fr/2012PA112281.

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Ce travail s’inscrit dans le cadre de la migration des éléments radiotoxiques dans la géosphère, en contexte de stockage géologique futur de déchets nucléaire. Pour mieux comprendre les phénomènes de rétention, nous avons choisi d’étudier la spéciation de l’ion uranyle (modèle d’un ion radiotoxique mobile) sur la silice (modèle d’oxyde) en présence d’acides monocarboxyliques à courte chaîne (un des modèles des matières organiques naturelles et surtout caractéristiques des produits de dégradation de la cellulose contenue dans les déchets technologiques). La démarche adoptée consiste à associer une étude macroscopique et une analyse structurale, afin d’accéder par modélisation, aux valeurs des constantes associées des équilibres de rétention mis en jeu.Les courbes de sorption réalisées en fonction du pH en présence d’acides organiques nous montrent une relation compétitive pour complexer l’ion uranyle entre les ligands organiques et des sites de surface de la silice. D’ailleurs, plus longue est la chaîne carbonée, plus évidente est cet effet de compétition.La caractérisation structurale des complexes de surface formés a été réalisée par ATR – FTIR et par SLRT. Ces deux techniques montrent que la présence d’acides organiques change l’environnement de l’uranyle sorbé par rapport au système uranyle/silice, ainsi un complexe ternaire de surface « silice-uranyle-organique » ne se sorbe qu’en présence d’acide acétique ou propanoïque. La coordination « chelating-bidentate » entre l’uranyle et le carboxylate, est mise en évidence par spectroscopie Infrarouge. L’ensemble de ces données expérimentales permet de simuler de manière très cohérente des courbes de sorption en utilisant le modèle de complexation de surface à capacité constante<br>Understanding the migration behaviour of radionuclides is essential for a reliable long-term safety assessment of nuclear waste disposal sites. In this study, we focus on the sorption behaviour of uranyl ion (model of hexavalent actinides) on silica gel (reference oxide presents in soils) in the presence of the simplest monocarboxylic acids (to model the organic matters or to be degradation products of cellulose issued from nuclear industry). Moreover, no investigation has been reported on their interactions in previous studies, while the main part of studies on ternary systems concerns the effect of humic or fulvic substances. In this work, the studies of uranyl ion and acids uptake in sorption systems have been performed by combining the macroscopic sorption data and the spectroscopic informations of the surface complexes. The sorption edges as function of pH for different systems indicate that the increase of organics concentration results in a decrease of uranyl ion retention in the following order: propionate &gt; acetate &gt; formate, which can be interpreted as their complexing capacity with uranyl ion in solution. ATR – FTIR and TRLFS are applied to carry out the structural information of sorbed uranyl ion and carboxylic acids at the silica/electolyte interface. Both techniques show a good agreement that the presence of acids changes the environments of sorbed uranyl and suggest the existence of “silica-uranyl-organic” ternary surface complexe when acetic or propionic acid presents. Infrared spectroscopy shows also that the coordination between uranyl ion and carboxylate group is “chelating-bidentate” coordination type. Based on these structural investigations, the sorption edges are simulated effectively and the reaction constants are then obtained by using the constant capacitance surface complexation model
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8

Mahmood, S. T. "Design of a clinical brain SPECT based on optimized multi slit-slat collimation." Thesis, University College London (University of London), 2010. http://discovery.ucl.ac.uk/1233364/.

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Parallel-hole collimators are the most widely used collimators in clinical SPECT imaging. However the performances of these collimators are limited in terms of efficiency and resolution, 0.01% and 1cm at 10cm distance from the detector face, respectively. Simultaneous optimisation is not possible due to existence of a fundamental trade-off between resolution and efficiency. Hence an alternative method of increasing efficiency without compromising resolution is necessary. Slit-slat collimator provides a better alternative to parallel-hole, due to their magnification power. The aim and objectives of this PhD work was to design and optimise a clinical brain SPECT system based on slit-slat collimation and a novel detector with silicon drift diodes (SDDs) readout providing 1mm intrinsic resolution. The system efficiency can be improved by increasing the number of slits, however as the number of slits increases, so does the multiplexing, which is the overlapping of the projections on the detector plane. We hypothesize that the reconstruction of multiplexed (MX) projections can be improved by addition of non-MX projections. We have proved this using simulation and shown that a gain in signal to noise ratio (SNR) (25.5%) corresponding to 43% reduction in acquisition time was achievable when non-MX projections were available. Several novel system designs that utilise the SDDs technology with mixed degrees of multiplexing have been evaluated. To enable experimental validation of the simulation work, a prototype slit-slat collimator was designed and built for a conventional gamma camera. Full calibration of the system was performed, the efficiency and resolution profiles were measured and studies of point sources, Jaszczak and Striatal phantoms were completed. The results of these studies confirmed the potential for multiplexing to improve image quality when used in conjunction with non-multiplexed projections with a maximum gain in SNR equivalent to of 50.6%.
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Leguay, Sébastien. "Complexation des actinides (III, IV et V) par des acides organiques." Phd thesis, Université Paris Sud - Paris XI, 2012. http://tel.archives-ouvertes.fr/tel-00762743.

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L'acquisition de données structurales et thermodynamiques relatives à des systèmes actinides (An(III), Pu(IV) Pa(V))-acides organiques polyfonctionnels (citrique, NTA, DTPA), en solution aqueuse, vise à une meilleure compréhension des interactions actinides-ligands essentielle à l'optimisation de procédés de séparation, de décorporation, et également à l'évaluation de la sûreté des sites de stockage de déchets radioactifs. Le comportement du protactinium pentavalent à l'échelle des traces en présence des anions citrates et NTA a fait l'objet d'études systématiques par extraction liquide-liquide dans le système TTA/Toluène/HClO₄/NaClO₄/Pa(V)/ligands. Après avoir déterminé l'ordre limite des complexes (3 pour Pa(V)-Cit et 2 pour Pa(V)-NTA), les constantes de formation associées à chaque espèce ont pu être calculées. L'étude multi-technique (électrophorèse capillaire et spectrofluométrie laser) sur la complexation des An(III) par le DTPA, réalisée à plusieurs pH, a permis de mettre en évidence la coexistence des complexes mono-protoné (AnHDTPA-) et déprotoné. (AnDTPA²-) pour des solutions acides et faiblement acides. Une réinterprétation des données de la littérature, en considérant les deux complexes, a permis de faire converger les valeurs des constantes de complexation des espèces qui étaient jusqu'à maintenant dispersées. L'étude thermodynamique a ensuite été complétée par une étude théorique (calculs DFT). La structure des complexes protoné et non protoné et le mode de coordination du Curium ont ainsi été établis. L'étude exploratoire sur la complexation du Pu(IV) par le DTPA dans des conditions de pH proches du milieu biologique a nécessité le développement d'un protocole expérimental en trois étapes : protection de Pu(IV) contre l'hydrolyse avec NTA (pH faible), augmentation du pH vers des conditions neutres, compétition entre la complexation de Pu(IV) par le NTA et le DTPA. Les expériences préliminaires réalisées entre pH 1,5 et 3,5 par électrophorèse capillaire (EC-ICP-MS), semblent indiquer l'existence d'effet cinétique ou/et l'existence d'un complexe mixte. Les interprétations faites lors de cette étude exploratoire sont à confirmer.
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10

Sabau, Andrea. "Mécanismes d’interaction du nickel et de l´europium avec la calcite." Thesis, Nice, 2015. http://www.theses.fr/2015NICE4003/document.

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Dans le contexte de l’évaluation de la sûreté d’un stockage de déchets radioactifs en site géologique profond, les réactions de sorption sont un des principaux processus à prendre en compte pour prédire la migration des radionucléides. Ce travail est axé sur deux éléments: l´Eu(III) comme analogue des certains actinides trivalents et le Ni(II) en tant que produit d’activation. La calcite a été choisie comme solide d´étude en tant que composant des argilites du Callovo-Oxfordien. Notre étude combine des expériences de type batch avec des techniques spectroscopiques (SLRT, RBS et MEB-EDXS) pour élucider les mécanismes qui se produisent à l’interface Eu(III) / Ni(II) – calcite. Pour obtenir une meilleure compréhension des systèmes, avant de commencer les expériences de sorption, la chimie en solution de l’Eu(III) et du Ni(II) a été systématiquement étudiée. La calcite a montré une forte rétention de l'Eu(III), quelle que soit la concentration initiale, le temps de contact et la pression partielle de CO2. Ni(II) est également aisément retenu par la calcite, mais la rétention est dépendante de ces deux paramètres. Les résultats de désorption indiquent une réversibilité partielle pour Ni(II). La SLRT a montré l’influence de la concentration et du temps de contact sur l’interaction de l’Eu(III) avec la calcite. Avec l’aide de la RBS et de la MEB/EDX, elle a permis de discriminer entre différents mécanismes tels que la précipitation de surface, la formation de complexes de surface de sphère interne et l'incorporation. La RBS a démontré l'incorporation de l'Eu(III) dans la calcite jusqu’à une profondeur de 250 nm, contrairement au Ni(II) qui lui reste situé en surface<br>In the context of the safety assessment of an underground repository for nuclear waste, sorption reactions are one of the main processes to take into account to predict the migration of the radionuclides. This work is focused on two elements: Eu(III) as an analogue of trivalent actinides and Ni(II) as activation product. Calcite was chosen as adsorbent due to its presence in Callovian-Oxfordian argillites. Our study combines batch experiments with spectroscopic techniques (TRLFS, RBS and SEM-EDXS) to elucidate the mechanisms occurring at Eu(III)/Ni(II) calcite interface. To obtain a better understanding on the systems, before starting sorption experiments, aqueous chemistry of Eu(III) and Ni(II) was carefully investigated. Macroscopic results showed a strong retention of Eu(III) on calcite, no matter the initial concentration, contact time and CO2 partial pressure. Ni(II) was also readily sorbed by calcite, but the retention was influenced by contact time and concentration. Time-dependent sorption experiments showed a marked and slow increase of retention upon a long time range (up to 4 months).Desorption results indicated a partly reversible sorption for Ni(II). TRLFS highlighted the influence of initial concentration and contact time on the interaction of Eu(III) with calcite. With the help of RBS and SEM-EDXS, it enabled to discriminate between different mechanisms like surface precipitation, inner-sphere complexation and incorporation. RBS showed incorporation of Eu(III) into calcite up to 250 nm, contrary to Ni(II) which was located at the surface
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Books on the topic "SLRT"

1

Birbrajer, Julian. Slut. Passage, 2018.

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Slut? Simon & Schuster, 2006.

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Slot. Ugly Duckling Presse, 2012.

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Meehan, Joseph. Manual SLRs. Silver Pixel Press, 1994.

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Bender, Johan. Marselisborg slot. Klematis, 2012.

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Bernlef, J. Op slot. Em. Querido's Uitgeverij, 2007.

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Håkanson, Björn. Göra slut. Bonnier, 1995.

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Thomsen, Jørgen, and Jakob Aahauge. Hindsgavl Slot. Edited by Realdania Byg. Realdania Byg, 2011.

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Barreiro, Ricardo. Slot-Barr. Colihue, 2001.

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Lynch, Chris. Slot machine. Poolbeg, 1997.

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Book chapters on the topic "SLRT"

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Furukawa, M., Wei Gao, Hideki Shimizu, S. Kiyono, M. Yasutake, and K. Takahashi. "Three-Dimensional Slit Width Measurement for Long Precision Slot Dies." In Key Engineering Materials. Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-977-6.343.

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Willemsen, F. A. "Slot." In Stoppen met roken. Bohn Stafleu van Loghum, 2013. http://dx.doi.org/10.1007/978-90-313-7593-6_19.

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Werbowetski-Ogilvie, Tamra E., Mohamad Seyed Sadr, and Rolando F. Del Maestro. "Slit." In Encyclopedia of Cancer. Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-27841-9_5351-2.

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Weik, Martin H. "slot." In Computer Science and Communications Dictionary. Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_17609.

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Werbowetski-Ogilvie, Tamra E., Mohamad Seyed Sadr, and Rolando F. Del Maestro. "Slit." In Encyclopedia of Cancer. Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-46875-3_5351.

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Werbowetski-Ogilvie, Tamra E., Rolando F. Del Maestro, and Mohamad Seyed Sadr. "Slit." In Encyclopedia of Cancer. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-16483-5_5351.

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Gellrich, Marcus-Matthias. "Basics." In The Slit Lamp. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-39793-6_1.

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Gellrich, Marcus-Matthias. "Biomicroscopy." In The Slit Lamp. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-39793-6_2.

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Gellrich, Marcus-Matthias. "Videography: Basics." In The Slit Lamp. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-39793-6_3.

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Gellrich, Marcus-Matthias. "Special Videography." In The Slit Lamp. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-39793-6_4.

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Conference papers on the topic "SLRT"

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Wahba, Mohamed, Robert Leary, Nicolás Ochoa-Lleras, Jariullah Safi, and Sean Brennan. "A ROS-Simulink Real-Time Communication Bridge Using UDP With a Driver-in-the-Loop Application." In ASME 2016 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/dscc2016-9693.

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This paper presents implementation details and performance metrics for software developed to connect the Robot Operating System (ROS) with Simulink Real-Time (SLRT). The communication takes place through the User Datagram Protocol (UDP) which allows for fast transmission of large amounts of data between the two systems. We use SLRT’s built-in UDP communication and binary packing blocks to send and receive the data over a network. We use implementation metrics from several examples to illustrate the effectiveness and drawbacks of this bridge in a real-time environment. The time latency of the bridge is analyzed by performing loop-back tests and obtaining the statistics of the time delay. A proof of concept experiment is presented that utilizes two laboratories that ran a driver-in-the-loop system despite a large physical separation. This work provides recommendations for implementing data integrity measures as well as the potential to use the system with other applications that demand high speed real-time communication.
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Zheng, Xiaofen, and Scott D. Metzler. "Adaptive optimization of slit width for a slit-slat collimator." In 2012 IEEE Nuclear Science Symposium and Medical Imaging Conference (2012 NSS/MIC). IEEE, 2012. http://dx.doi.org/10.1109/nssmic.2012.6551490.

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Kelly, James, and Rob Seager. "Slit-Slot Loaded Parallel Coupled-Line Filter." In 2007 Loughborough Antennas and Propagation Conference. IEEE, 2007. http://dx.doi.org/10.1109/lapc.2007.367477.

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Zheng, Xiaofen, and Scott D. Metzler. "Angular viewing time optimization for slit-slat SPECT." In 2012 IEEE Nuclear Science Symposium and Medical Imaging Conference (2012 NSS/MIC). IEEE, 2012. http://dx.doi.org/10.1109/nssmic.2012.6551805.

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Qin, Yong, Ruoyu Wang, Yanping Song, Fu Chen, and Huaping Liu. "Active Flow Control on a Highly Loaded Compressor Stator Cascade With Synthetic Jets." In ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/gt2016-56830.

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Numerical investigations on the control effects of synthetic jets are conducted upon a highly loaded compressor stator cascade. The influence of forcing parameters including actuation frequency, jet amplitude and slot location are analyzed in detail with the single-slit synthetic jet. Besides, a new slot arrangement is put forward for the purpose of effectively controlling flow separation. Simulation results validate the remarkable effectiveness of the single-slit synthetic jet on controlling flow separation. Owing to the coupling effect between the jet and the main flow, the actuation appears to be most efficient under the characteristic frequency of the main flow passing through the airfoil. Additionally, with the increase of jet momentum coefficient, the control effect is enhanced at first and then decreased, depending on the two aspects: the improvements of aerodynamic performance by momentum injection and the additional flow losses caused by the jet. Compared to other actuator configurations, the segment synthetic jet with three sections can more effectively deflect the end-wall cross flow and thus impede the development of corner vortex, which helps to restrain the accumulation of low momentum fluid towards the corner, emphasizing the importance of slot arrangement. Accordingly, under the optimum condition, the total pressure loss coefficient gains a 15.8% reductions and the static pressure rise coefficient is increased by 5.01%.
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Rozler, Mike, and Wei Chang. "A variable-pitch slat stack for task-specific slit-slat collimation: A preliminary report." In 2012 IEEE Nuclear Science Symposium and Medical Imaging Conference (2012 NSS/MIC). IEEE, 2012. http://dx.doi.org/10.1109/nssmic.2012.6551803.

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Metzler, Scott D., Roberto Accorsi, Ahmet S. Ayan, and Ronald J. Jaszczak. "First Experimental Results from a Prototype Rotating Slit-Slat Collimator." In 2008 IEEE Nuclear Science Symposium and Medical Imaging conference (2008 NSS/MIC). IEEE, 2008. http://dx.doi.org/10.1109/nssmic.2008.4774330.

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Singh, Ranjay, Sarika Kalra, and Vineeta Agrawal. "Analysis of slit rotor slot of high speed SRIM and comparison with double cage rotor slot." In 2014 Students Conference on Engineering and Systems (SCES). IEEE, 2014. http://dx.doi.org/10.1109/sces.2014.6880081.

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Metzler, Scott D., Ahmet S. Ayan, Roberto Accorsi, and John R. Novak. "Reconstruction of Phantom SPECT Scans Acquired with a Slit-Slat Collimator." In 2006 IEEE Nuclear Science Symposium Conference Record. IEEE, 2006. http://dx.doi.org/10.1109/nssmic.2006.356498.

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Tianyu Ma, Rutao Yao, and Yiping Shao. "Determination of geometrical parameters for slit-slat SPECT imaging on MicroPET." In 2007 IEEE Nuclear Science Symposium Conference Record. IEEE, 2007. http://dx.doi.org/10.1109/nssmic.2007.4437063.

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Reports on the topic "SLRT"

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Warne, Larry K., William A. Johnson, Brian Frederick Zinser, et al. Narrow Slot Algorithm. Office of Scientific and Technical Information (OSTI), 2020. http://dx.doi.org/10.2172/1615888.

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Dietrich, Richard E. China SLAT Plan Template. Office of Scientific and Technical Information (OSTI), 2016. http://dx.doi.org/10.2172/1431325.

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Dixon, Kenneth, Evan Koelker, and Terrence Killeen. INSTALLATION OF LYSIMETERS NEAR ENGINEERED TRENCH 3, SLIT TRENCH 8, AND SLIT TRENCH 9. Office of Scientific and Technical Information (OSTI), 2023. http://dx.doi.org/10.2172/1985037.

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McAllister, A., R. Steinolfson, and T. Tajima. Vertical Slot Convection: A linear study. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/6701354.

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McAllister, A., R. Steinolfson, and T. Tajima. Vertical Slot Convection: A linear study. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/10132760.

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D'Arcy, Richard, and Alexander Shemyakin. Calculation of the effect of slit size on emittance measurements made by a two-slit scanner. Office of Scientific and Technical Information (OSTI), 2015. http://dx.doi.org/10.2172/1480125.

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Staples, John. VHF Injector Pumping Slot RF Shielding Effectiveness. Office of Scientific and Technical Information (OSTI), 2007. http://dx.doi.org/10.2172/1235577.

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Kisliuk, Moshe, Bernard Steinberg, and William Whistler. Conformal Microstrip Slot Antenna and Antenna Array. Defense Technical Information Center, 1986. http://dx.doi.org/10.21236/ada174370.

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Ginis, Isaac, Deborah Crowley, Peter Stempel, and Amanda Babson. The impact of sea level rise during nor?easters in New England: Acadia National Park, Boston Harbor Islands, Boston National Historical Park, and Cape Cod National Seashore. National Park Service, 2024. http://dx.doi.org/10.36967/2304306.

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This study examines the potential impact of sea level rise (SLR) caused by climate change on the effects of extratropical cyclones, also known as nor?easters, in four New England coastal parks: Acadia National Park (ACAD), Boston Harbor Islands National Recreation Area (BOHA), Boston National Historical Park (BOST) and Cape Cod National Seashore (CACO). A multi-method approach is employed, including a literature review, observational data analysis, coupled hydrodynamic-wave numerical modeling, 3D visualizations, and communication of findings. The literature review examines previous studies of nor?easters and associated storm surges in New England and SLR projections across the study domain due to climate change. The observational data analysis evaluates the characteristics of nor?easters and their effects, providing a basis for validating the model. Numerical modeling is performed using the Advanced Circulation (ADCIRC) model, coupled with the Simulating Waves in the Nearshore (SWAN) model to simulate storm surges and waves. The model was validated against available observations and demonstrated its ability to simulate water levels, inland inundation, and wave heights in the study area with high accuracy. The validated model was used to simulate three powerful nor?easters (April 2007, January 2018, and March 2018) and each storm was simulated for three sea levels, (1) a baseline mean sea level representative of the year 2020, as well as with a (2) 1 ft of SLR and (3) 1 m of SLR. Analysis of the model output was used to assess the vulnerability of the parks to nor?easters by examining peak impacts in the park areas. Additional simulations were conducted to evaluate the role of waves in predicting peak water levels and the impact of inlet configurations on storm surges within coastal embayments behind the barrier beach systems in the southern Cape Cod region. The project developed maps, three-dimensional visualizations, and an interpretive film to assist the parks in planning for resource management, maintenance, emergency management, visitor access, safety, education, and outreach. These tools provide a better understanding of the potential impacts of nor?easters and SLR and enable the parks to better prepare for future storms.
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Kim, Kyeonghee, and Xiao Lin. Climate risks in the commercial mortgage portfolios of life insurers: A focus on sea level rise and flood risks. Center for Insurance Policy and Research, 2023. http://dx.doi.org/10.52227/26565.2023.

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In this paper, we explore the climate risk exposure of U.S. life insurers’ commercial mortgage loan portfolios, focusing on sea level rise (SLR) and flood risks. Commercial mortgages are an important asset class of life insurers: Approximately 15% of the life insurance industry asset is held in commercial mortgages. Life insurers are also important institutional investors in the commercial real estate (CRE) market. They hold approximately 14% of the outstanding CRE mortgage loans and are the third-largest institutional lenders in the U.S. commercial mortgage market. Life insurers are exposed to both physical and transitional risks of climate change through their commercial mortgage investments: Physical damages to commercial properties may increase due to flooding or SLR, and devaluation of certain commercial properties as the economy transitions can also lead to financial losses for life insurers.
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