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Journal articles on the topic 'Reagant'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Katsuta, S., T. Okano, and H. Suzuki. "REAGANT HANDLING AND RELEASE SYSTEM USING CELL-SIZED LIPOSOMES." Proceedings of the Symposium on Micro-Nano Science and Technology 2017.8 (2017): PN—86. http://dx.doi.org/10.1299/jsmemnm.2017.8.pn-86.

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Kotyński, Andrzej, Zbigniew H. Kudzin, and Romuald Skowroński. "Trifluoroacetic anhydride-sodium iodide as a reagant for the selective detection of nitroso compounds by thin-layer chromatography." Journal of Chromatography A 516, no. 2 (1990): 467–72. http://dx.doi.org/10.1016/s0021-9673(01)89290-6.

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Kusdarini, Esthi, Agus Budianto, and Desyana Ghafarunnisa. "PRODUKSI KARBON AKTIF DARI BATUBARA BITUMINUS DENGAN AKTIVASI TUNGGAL H3PO4, KOMBINASI H3PO4-NH4HCO3, DAN TERMAL." Reaktor 17, no. 2 (2017): 74. http://dx.doi.org/10.14710/reaktor.17.2.74-80.

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Abstract ACTIVE CARBON PRODUCTION OF BITUMINOUS COAL WITH SINGLE ACTIVITY H3PO4, H3PO4 COMBINE WITH NH4HCO3, AND THERMAL. Bituminous coal has a good potential to be utilized as activated carbon because it has high carbon, which is between 54-86%. The purpose of research was to obtain moisture content data, ash content, volatile matter, fixed carbon, absorption of iodine (iodine), area surface and the volume of pore activated carbon. Another aim was to study the effect of reagent types and concentrations of H3PO4 reagent and NH4HCO3 reagent to the characteristics of the activated carbon. The st

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An, Jae-Seok, Ji-Na Kim, Kwang-Seo Park, Eun-Bit Joo, Sang-Hyuk Yoon, and Yoon-Cheol Kim. "A Study on the Comparison of One Step Method and Two Step Method to Improve Reporting of CA 19-9 Results." Korean Journal of Nuclear Medicine Technology 28, no. 1 (2024): 81–87. https://doi.org/10.12972/kjnmt.20240011.

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Purpose: CA 19-9 is the most widely used tumor marker for the diagnosis of digestive system tumor, especially pancreatic and biliary tract cancer. This study was conducted to improve the result value near reference range by comparing the reagents of CA 19-9 one step method and two step method. In addition, it was intended to establish a standard for selecting reagents. Material and Methods: 120 patients who visited the National Cancer Center in 2023 were selected as subjects for this study. The reagents used in the study were CA 19-9 IRMA kits (Shinjin, Korea) and three types of reagents were

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(SMT.), R. D. WAGH, and ANUSE M.A. "1-( 4'-Bromophenyl)-4,4,6-trimethyl-(1 H,4H)-2-pyrimidinethiol as a Spectrophotometric Reagent for Rhodium(III)." Journal of Indian Chemical Society Vol. 74, Jun 1997 (1997): 514–15. https://doi.org/10.5281/zenodo.5882633.

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Analytical Chemistry Laboratory, Shivaji University, Kolhapur-416 004 Manuscript received 24 March 1995. revised 29 December 1995, accepted 4 March 1996 1-( 4'-Bromophenyl)-4,4,6-trimethyl-(1 <em>H</em>,4<em>H</em>)-2-pyrimidinethiol as a Spectrophotometric Reagent for Rhodium(III)  

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Ndubuizu, Rosemary Nonye. "REAGAN’S AUSTERITY BUREAUCRATS." Du Bois Review: Social Science Research on Race 16, no. 2 (2019): 535–54. http://dx.doi.org/10.1017/s1742058x19000274.

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AbstractIn 1982, President Ronald Reagan’s administration initiated a dramatic policy shift towards a new housing voucher program, which simultaneously resulted in a near-halt in public and project-based assisted housing funding. When analyzing this historic policy shift, many affordable housing scholars have overemphasized race-absent narratives about fiscal austerity to explain the Reagan administration’s policy rejection of public housing and embrace of housing vouchers. To present a more comprehensive and intersectional history of the Reagan administration’s transition to housing vouchers,

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McCormick, Evan. "Freedom Tide? Ideology, Politics, and the Origins of Democracy Promotion in U.S. Central America Policy, 1980–1984." Journal of Cold War Studies 16, no. 4 (2014): 60–109. http://dx.doi.org/10.1162/jcws_a_00516.

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The Reagan administration came to power in 1981 seeking to downplay Jimmy Carter's emphasis on human rights in U.S. policy toward Latin America. Yet, by 1985 the administration had come to justify its policies towards Central America in the very same terms. This article examines the dramatic shift that occurred in policymaking toward Central America during Ronald Reagan's first term. Synthesizing existing accounts while drawing on new and recently declassified material, the article looks beyond rhetoric to the political, intellectual, and bureaucratic dynamics that conditioned the emergence of

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M. Alhar, Maysaa A. "A Study of the Spectral, Chromatographic and Solubility Characteristics of New Analytical Reagents from Anil-Azo and Their Biological Effects on Bacteria." Biomedical and Pharmacology Journal 15, no. 2 (2022): 1115–26. http://dx.doi.org/10.13005/bpj/2447.

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This study was conducted to create a new reagent from Anil-Azo compounds and study their biological impacts on two types of bacteria. For the first step, four reagents had been created by reaction of p-phenyl diamine in acidic form with 2-formyl-4-methyl phenol in neutral medium to create reagent {1}, which used to produce reagent {2} by reacting it with amino benzothiazole over four hours in the presence of glacial CH3COOH. The reagent {1} was also used to form reagent {3} by reacting it with amino imidazole over two hours. Finally, reagent {3} had been generated by reacting reagent {1} with

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9

Xiao, Hong Xiang, Xiang Ji, and Jun Fei Dong. "Advanced Encryption Standard Algorithm Applied Research in Medical Reagent Sales Management." International Journal of Engineering Research in Africa 21 (December 2015): 209–14. http://dx.doi.org/10.4028/www.scientific.net/jera.21.209.

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Blood cell analyzer to complete cell detection function to fit the diluent, the hemolytic agent, sheath fluid reagent for medical use. In order to guarantee the stability of testing results, as well as protecting the interests of enterprise sales of reagents, under normal circumstances, instruments and reagents password authentication is needed in order to work properly. Reagent sales typically use encryption methods to achieve the instrument specifies the use of reagents, but unable to control reagent for sales by region. Using a symmetric key encryption algorithm Advanced Encryption Standard

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10

A.M. Alhar, Maysaa. "Preparation of Chalcone-Azo reagents and study of their chemical analysis, thermal studies, and biological effects against fungi." Sumer 4 8, CSS 4 (2023): 1–13. http://dx.doi.org/10.21931/rb/css/2023.08.04.99.

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Chalcone reagents are used in various fields because of their biological, medical, and medicinal properties. Therefore, this study aimed to prepare a new reagent of Chalcone–Azo and study its chemical and physical properties using different techniques. In this recent work, four reagents were created and tested using thermal behavior in stability curves, solubility in various solvents, and spectral characterization like UV-visible FT-IR. In addition, a biological study was conducted to estimate the effect of these reagents on two types of fungi. Results showed that spectral characterization met

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Minogue, Timothy D., Phillip A. Rachwal, Adrienne Trombley Hall, Jeffery W. Koehler, and Simon A. Weller. "Cross-Institute Evaluations of Inhibitor-Resistant PCR Reagents for Direct Testing of Aerosol and Blood Samples Containing Biological Warfare Agent DNA." Applied and Environmental Microbiology 80, no. 4 (2013): 1322–29. http://dx.doi.org/10.1128/aem.03478-13.

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ABSTRACTRapid pathogen detection is crucial for the timely introduction of therapeutics. Two groups (one in the United Kingdom and one in the United States) independently evaluated inhibitor-resistant PCR reagents for the direct testing of substrates. In the United Kingdom, a multiplexedBacillus anthracis(target) andBacillus subtilis(internal-control) PCR was used to evaluate 4 reagents against 5 PCR inhibitors and down-selected the TaqMan Fast Virus 1-Step master mix (Life Technologies Inc.). In the United States, four real-time PCR assays (targetingB. anthracis,Brucella melitensis, Venezuela

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Meinardi, Ichwan, and Mansyur Arif. "KADAR KOLESTEROL HDL TERUKUR MENGGUNAKAN REAGEN CHOLESTEST N HDL DAN HDL-C PLUS GENERASI KETIGA." INDONESIAN JOURNAL OF CLINICAL PATHOLOGY AND MEDICAL LABORATORY 16, no. 2 (2018): 78. http://dx.doi.org/10.24293/ijcpml.v16i2.971.

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The using of the open reagent system tools gives the possibility to choose the best quality of reagents including the reagent for HDLcholesterol concentration test. Hitachi 902 (Roche) as an open reagent system tool may used Cholestest N HDL (Daichi) as the firstHDL reagent and HDL-C plus 3rd generation reagent (Roche). The aim of this study was to know the correlation of HDL cholesterolconcentrations using Cholestest N HDL and HDL-C plus 3rd generation reagents measured by Hitachi 902. A cross sectional study wasdone from April to June 2008 at Ratulangi Medical Centre Laboratory, Makassar. Th

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Jeong, Se-Hee, Yung-Ji Lee, and Sun-Ho Lee. "Comparative Analysis between Reagents for Hepatitis B Surface Antibody Titer Test." Korean Journal of Nuclear Medicine Technology 28, no. 2 (2024): 143–51. https://doi.org/10.12972/kjnmt.20240019.

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Purpose: It is important for liver transplant patients to maintain a certain level of hepatitis B antibodies to prevent recurrence of hepatitis B after liver transplant surgery. The liver transplant and hepatobiliary surgery department at our hospital uses hepatitis B surface antibody titer testing as an important indicator in monitoring liver transplant patients. Recently, our hospital switched to reagents from company B due to an unstable supply of reagents and consumables from company A. Therefore, we evaluated the differences and correlation between those two reagents. Materials and Method

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Krylov, Igor B., Vera A. Vil’, and Alexander O. Terent’ev. "Cross-dehydrogenative coupling for the intermolecular C–O bond formation." Beilstein Journal of Organic Chemistry 11 (January 20, 2015): 92–146. http://dx.doi.org/10.3762/bjoc.11.13.

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The present review summarizes primary publications on the cross-dehydrogenative C–O coupling, with special emphasis on the studies published after 2000. The starting compound, which donates a carbon atom for the formation of a new C–O bond, is called the CH-reagent or the C-reagent, and the compound, an oxygen atom of which is involved in the new bond, is called the OH-reagent or the O-reagent. Alcohols and carboxylic acids are most commonly used as O-reagents; hydroxylamine derivatives, hydroperoxides, and sulfonic acids are employed less often. The cross-dehydrogenative C–O coupling reaction

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15

Umaternate, Ghazaly R., Jemmy Abidjulu, and Audy D. Wuntu. "Uji Metode Olsen dan Bray dalam Menganalisis Kandungan Fosfat Tersedia pada Tanah Sawah di Desa Konarom Barat Kecamatan Dumoga Utara." Jurnal MIPA 3, no. 1 (2014): 6. http://dx.doi.org/10.35799/jm.3.1.2014.3898.

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Telah dilakukan penelitian untuk menentukan konsentrasi fosfat tersedia pada tanah sawah dan membandingkan dua metode ekstraksi fosfat, yaitu metode olsen yang menggunakan reagen NaHCO3 dan metode bray yang menggunakan reagen Bray dan Kurtz. Hasil ekstrak direaksikan dengan pereaksi pewarna fosfat bersama deret standar dan diukur absorbansinya menggunakan spektrofotometer pada panjang gelombang 693 nm. Hasil penelitian menunjukkan bahwa ekstrak fosfat tersedia dari metode Olsen menunjukkan hasil konsentrasi yang tinggi berturut–turut 422,861; 771,614; 1389,464; 1607,386; 821,591; dan 1139,925

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16

Mayer, Andrew P., and Kristy J. Fraley. "The importance of quality critical reagents for the entire developmental lifecycle of a biopharmaceutical: a pharmacokinetic case study." Bioanalysis 13, no. 10 (2021): 817–27. http://dx.doi.org/10.4155/bio-2020-0253.

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Background: High-quality critical reagents are essential to the successful support of biotherapeutic drug development regardless of the analytical platform used for support. The lack of such a reagent, early in the development lifecycle of a biotherapeutic can have detrimental impact on resource and translation of data across development phases. Results: Here, a pharmacokinetic assay case study is shared that illustrates what can occur when there is a lack of a reproducible and sustainable critical reagent early in the development lifecycle of a biotherapeutic. Various assay formats and critic

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TAGUCHI, Takeo. "New reagents. IX. Fluorinating reagents. Fluorinating reagent: DAST." Journal of Synthetic Organic Chemistry, Japan 48, no. 11 (1990): 1048–49. http://dx.doi.org/10.5059/yukigoseikyokaishi.48.1048.

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18

Armer, Jane, Diane Giles, Ian Lancaster, and Kathryn Brownbill. "Impact of light exposure on thyroid-stimulating hormone results using the Siemens Advia Centaur TSH-3Ultra assay." Annals of Clinical Biochemistry: International Journal of Laboratory Medicine 54, no. 5 (2017): 612–15. http://dx.doi.org/10.1177/0004563216688924.

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Background Thyroid-stimulating hormone (TSH) is used as the first-line test of thyroid function. Siemens Healthcare Diagnostics recommend that Siemens Centaur reagents must be protected from light in the assay information and on reagent packaging. We have compared the effect of light exposure on results using Siemens TSH-3Ultra and follicle-stimulating hormone reagents. The thyroid-stimulating hormone reagent includes fluoroscein thiocyanate whereas the follicle-stimulating hormone reagent does not. Methods Three levels of quality controls were analysed using SiemensTSH-3Ultra and follicle-sti

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Ningtyas, Karisma Wulan, Zulfikar Zulfikar, and Bambang Piluharto. "Identification of Ibuprofen, Ketoprofen and Diclofenac by Using Test Strip Based on Imobilized Spesific Reagent on Nata De Coco Membrane." Jurnal ILMU DASAR 16, no. 2 (2016): 49. http://dx.doi.org/10.19184/jid.v16i2.1520.

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Identification of ibuprofen, ketoprofen and diclofenac can be done by using simple method, it is called test strips. Test strip is made by immobilized specific reagents with entrapment technical on membrane matrix, which the used membrane nata de coco. Immobilization reagents with entrapment techniques aimed to trap reagent molecules in the space between the supporting material.The success of this imobilization can be seen from membran changing color after additional reagent and there is no leeching after additional sample on membrane. The used reagent for this identification is methyl red for

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Irawan, Maria Gracella, Henky Muljana, Asaf Kleopas Sugih, Usman Oemar, and Jessica Atin. "Sintesis polivinil alkohol tersulfonasi sebagai katalis dalam produksi metil ester: review." Jurnal Rekayasa Proses 16, no. 1 (2022): 66. http://dx.doi.org/10.22146/jrekpros.70698.

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A B S T R A C TSulfonated polyvinyl alcohol (PVA) can be used as a heterogeneous catalyst in esterification or transesterification reactions during methyl ester production. This catalyst with PVA support has the potential to be used commercially like Amberlyst 46. However, there are several drawbacks in the conventional methods to produce sulfonated PVA compared to Amberlyst 46. In this paper, various processes of sulfonated PVA synthesis will be discussed including the advantages and disadvantages compared to Amberlyst 46. The synthesis of sulfonated PVA catalysts can be carried out using sul

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Jin, Tangtang, Gangze Fu, Lina Ge, and Peizhen Lin. "Analysis of Clinical Stability of Ophthalmic Preparations Combined with Artificial Intelligence Medical Image Technology." Journal of Medical Imaging and Health Informatics 11, no. 1 (2021): 120–26. http://dx.doi.org/10.1166/jmihi.2021.3342.

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This study aims to analyze the stability of ophthalmic reagent cyclosporine polypeptide A and provide theoretical basis for future clinical medication. In this study, polyethylene glycol stearate with good physiological tolerance was selected to replace the emulsifier Tween80 in the sell prescription. The sell prescription was set as reagent 1, and the improved reagent was set as reagent 2. The two reagents were placed under high temperature (45 °C and 65 °C) and high light (4600Ix) for 18 days, and the pH and content of the two reagents were detected and recorded by artificial intelligence (A

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Rauwerdink, Alissa, Michael Benson, Allison Jayne, Sathyapriya Babu, Jessica St Charles, and Amy Smith. "Adventures in critical reagent lot changes in ligand-binding assays: redevelopment, bridging and additional processing requirements." Bioanalysis 13, no. 10 (2021): 771–77. http://dx.doi.org/10.4155/bio-2020-0216.

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Aim: Critical reagents have significant impact on ligand-binding assay performance. The critical reagents selected during method development should be well-evaluated, as the quality of these reagents will dictate performance of the assay over time. Critical reagents in ligand-binding assays are almost always produced using a biological system, so batch yield, purity and performance tend to vary greatly. Due to the essential nature of critical reagents in the assay, changes in critical reagents can have dramatic impact on the assay and results, so close monitoring of assay performance is requir

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Hutagalung, I., and Mansyur Arif. "PENENTUAN KADAR LIPOPROTEIN RAPATAN TINGGI (HIGH DENSITY) DENGAN DUA PEREAKSI (REAGEN) BERBEDA MENGGUNAKAN HITACHI 902." INDONESIAN JOURNAL OF CLINICAL PATHOLOGY AND MEDICAL LABORATORY 15, no. 2 (2018): 46. http://dx.doi.org/10.24293/ijcpml.v15i2.941.

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Reagent selection is one of the factors that could influence the quality of laboratory results. The use of open system tools gives thepossibility to choose the best reagents, including the reagent for high density lipoprotein (HDL) determination. The aim of this studywas to compare HDL level determination using two different reagents measured by Hitachi 902. A cross sectional study was done fromJanuary to February 2007 in Ratulangi Medical Centre Laboratory, Makassar. From 47 samples we found that the mean HDL levelusing Daichi reagent was 50.47 mg/dl ranging from 45.99 mg/dl to 54.94 mg/dl an

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Riedel, T. E., J. C. Cox, and A. D. Ellington. "Low Temperature Microplate Station." JALA: Journal of the Association for Laboratory Automation 10, no. 1 (2005): 29–34. http://dx.doi.org/10.1016/j.jala.2004.10.002.

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The automation of biological laboratory assays may require lengthy incubations of reagents on the work surface of a pipetting robot. Commercial devices are readily available for keeping these reagents accessible and warm, but there are few existing technologies for storing accessible reagents below the freezing point of water. Here, we introduce a low cost, small footprint, robot accessible reagent cooler, based on compressor technology capable of acting as an enzyme freezer or extreme cold reagent storage device.

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Sun, Huifang, Shasha Yang, Pengfei Li, et al. "Comparative Assessment of APTT Reagents for Evaluating Anticoagulant Sensitivity of Fucosylated Glycosaminoglycans (FGs) Derived from Sea Cucumbers." Marine Drugs 21, no. 11 (2023): 568. http://dx.doi.org/10.3390/md21110568.

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Fucosylated glycosaminoglycans (FGs) derived from sea cucumbers exhibit potent intrinsic Xase (iXase) inhibition, anticoagulation, and antithrombosis. Plasma activated partial thromboplastin time (APTT), a widely used screening test worldwide, is crucial for evaluating anticoagulant efficacy. However, the applicability of these commercially available APTT reagents for assessing anticoagulation of FGs remains unreported. In this study, we investigated the disparity between ellagic acid and colloidal silica APTT reagents in evaluating anticoagulation of dHG-5 and dHLFG-4, two depolymerized FGs,

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Li, Pei Yi, Mei Yun Zhang, Xin Xing Xia, and Chun Tao Lin. "Research of Dual Cooking Reagents on Bamboo Pulping." Advanced Materials Research 482-484 (February 2012): 1511–14. http://dx.doi.org/10.4028/www.scientific.net/amr.482-484.1511.

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Bamboo, as a kind of non-wood raw material, has a long, thin fiber with wide distribution and rich abundance in China. It was studied that cooking reagents on bamboo pulping. AQ ramification and infiltration reagents were used to improve the cooking schedule. The results showed that AQ ramification could strengthen the cooking, but infiltration reagents couldn’t reach the good expect in cooking. When the AQ ramification and infiltration reagents were used together to cook, it could obviously decrease the Kappa number of the pulps and enhance the yield of pulps. Infiltration reagent Busperse 28

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Kittinger, Caroline, Jared Delmar, Lisa Hewitt, et al. "Critical reagents for ligand-binding assays: process development methodologies to enable high-quality reagents." Bioanalysis 14, no. 3 (2022): 117–35. http://dx.doi.org/10.4155/bio-2021-0217.

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Development of biotherapeutics require pharmacokinetic/pharmacodynamic (PK/PD) and immunogenicity assays that are frequently in a ligand-binding assay (LBA) format. Conjugated critical reagents for LBAs are generated conjugation of the biotherapeutic drug or anti-drug molecule with a label. Since conjugated critical reagent quality impacts LBA performance, control of the generation process is essential. Our perspective is that process development methodologies should be integrated into critical reagent production to understand the impact of conjugation reactions, purification techniques and fo

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Emrich, Thomas, Jan Olaf Stracke, Xiaoying Guo, et al. "Increasing robustness, reliability and storage stability of critical reagents by freeze-drying." Bioanalysis 13, no. 10 (2021): 829–40. http://dx.doi.org/10.4155/bio-2020-0299.

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Aim: Stabilization of critical reagents by freeze-drying would facilitate storage and transportation at ambient temperatures, and simultaneously enable constant reagent performance for long-term bioanalytical support throughout drug development. Freeze-drying as a generic process for stable performance and storage of critical reagents was investigated by establishing an universal formulation buffer and lyophilization process. Results: Using a storage-labile model protein, formulation buffers were evaluated to preserve reagent integrity during the freeze-drying process, and to retain functional

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Liu, Si Qing, Xiu Juan Li, Min Zhang, and Wan Ping Wang. "Fluorite Flotation of a Fluorite-Bearing Pb-Zn Tailings." Applied Mechanics and Materials 387 (August 2013): 3–6. http://dx.doi.org/10.4028/www.scientific.net/amm.387.3.

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Beneficiation of a Pb-Zn tailings containing 44.98% CaF2 was conducted by flotation using sodium hexametaphosphate and new reagents S180. Details of reagent consumption, adding reagents at different stages and concentration of flotation pulp were investigated. Through all the investigation, an optimum reagent system and flowsheet were established. Finally, a marketable fluorite concentrate assaying 98.32% CaF2 with the recovery of 95.00% was obtained by one rougher,6 cleaners and 2 scavengers.

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Nikolaeva, Tat'yana Nikolayevna, Petr Vladimirovich Lapshin, and Natal'ya Viktorovna Zagoskina. "METHOD FOR DETERMINING THE TOTAL CONTENT OF PHENOLIC COMPOUNDS IN PLANT EXTRACTS WITH FOLIN-DENIS REAGENT AND FOLIN-CHOCALTEU REAGENT: MODIFICATION AND COMPARISON." chemistry of plant raw material, no. 2 (June 10, 2021): 291–99. http://dx.doi.org/10.14258/jcprm.2021028250.

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A modification of the method for determining the total content of phenolic compounds in plant tissue extracts with the Folin-Denis reagent and the Folin-Ciocalteu reagent has been carried out, allowing to establish the correspondence of the results obtained when using them. The method using the Folin-Denis reagent is adapted for conducting determinations in microvolumes. For the method using the Folin-Ciocalteu reagent, the concentration of the latter (0.4 N, a 5-fold dilution of the standard reagent) and the composition of the reaction mixture were selected, using which the optical densities

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Bakro, Aseel, Lachlan Sharp-Bucknall, Tiffany B. Poynder, Jack K. Clegg, David J. D. Wilson, and Jason L. Dutton. "Lewis acid activation of Weiss’ reagents ([PhI(Pyr)₂]²⁺) with boranes and isolation of [PhI(4-DMAP)]²⁺." Chemical Communications 57, no. 91 (2021): 12163–66. http://dx.doi.org/10.1039/d1cc04725f.

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Kubiak, Robert J., Nancy Lee, Yuan Zhu, et al. "Storage Conditions of Conjugated Reagents Can Impact Results of Immunogenicity Assays." Journal of Immunology Research 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/1485615.

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Consistent performance of anti-drug antibody (ADA) assays through all stages of clinical development is critical for the assessment of immunogenicity and interpretation of PK, PD, safety, and efficacy. The electrochemiluminescent assays commonly employed for ADA measurement use drug conjugated with ruthenium and biotin to bind ADA in samples. Here we report an association between high nonspecific ADA responses in certain drug-naïve individuals and the storage buffer of the conjugated reagents used in a monoclonal antibody ADA assay. Ruthenylated reagents stored in phosphate-buffered saline (PB

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Takes, Peter A. "Stability Testing, Shelf Life and Product Expiration Dating." Microscopy Today 6, no. 10 (1998): 20–21. http://dx.doi.org/10.1017/s1551929500069686.

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Reagents available for laboratory, research, and clinical use are often acquired with a specified expiration date. Yet, many are not, depending on the manufacturer and reagent type. What a manufacturer does is frequency determined by how they label the product.The U.S. Ricd and Drug Administration [FDA] has defined categories by which reagents can he labeled based on their “intended use”. individual reagents (e.g., antibodies) intended for clinical diagnostic laboratory use will be labeled as an in Vitro Diagnostic [IVD] or Analyte Specific Reagent [ASR]. Under these categories, specified expi

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Orlovskyi, Vitalii, Volodymyr Biletskyi, and Myroslav Malovanyy. "Research on "Aesculus" Setting Retarder for Grouting Mortars." Chemistry & Chemical Technology 18, no. 4 (2024): 601–14. https://doi.org/10.23939/chcht18.04.601.

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In Ukraine, the number of reagents regulating the properties of tail blends used for cementing deep oil and gas wells has decreased. Therefore, there is a need to expand the range of these reagents produced domestically to replace the known reagent, nitrilotrimethylphosphonic acid, which was produced in russia. The new reagent-retarder for oil-well cement should have a wide temperature range of application, complexity of action, and meet the requirements of environmental safety.

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Fujdala, Kyle L., David W. K. Gracey, Erica F. Wong, and Kim M. Baines. "The addition of organometallic reagents to tetramesityldigermene." Canadian Journal of Chemistry 80, no. 11 (2002): 1387–92. http://dx.doi.org/10.1139/v02-128.

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The thermolysis and photolysis of hexamesitylcyclotrigermane in the presence of ethylmagnesium bromide has been investigated. Under photochemical conditions, ethyldimesitylgermane, 1,2-diethyl-1,1,2-trimesityldigermane and ethyl-1,1,2,2-tetramesityldigermane were isolated and, under thermal conditions, 1,2,2-triethyl-1,1-dimesityl digermane and 2,2-diethyl-1,1,1-trimesityldigermane were isolated. The photolysis of hexamesitylcyclotrigermane in the presence of methyllithium has also been investigated. In both cases, the organometallic reagent adds to tetramesityl digermene and dimesitylgermylen

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Bhadra, Sanchita, Vylan Nguyen, Jose-Angel Torres, et al. "Producing molecular biology reagents without purification." PLOS ONE 16, no. 6 (2021): e0252507. http://dx.doi.org/10.1371/journal.pone.0252507.

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We recently developed ‘cellular’ reagents–lyophilized bacteria overexpressing proteins of interest–that can replace commercial pure enzymes in typical diagnostic and molecular biology reactions. To make cellular reagent technology widely accessible and amenable to local production with minimal instrumentation, we now report a significantly simplified method for preparing cellular reagents that requires only a common bacterial incubator to grow and subsequently dry enzyme-expressing bacteria at 37°C with the aid of inexpensive chemical desiccants. We demonstrate application of such dried cellul

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Hays, Bradley D. "The Curious Case of School Prayer: Political Entrepreneurship and the Resilience of Legal Institutions." Politics and Religion 5, no. 2 (2012): 394–418. http://dx.doi.org/10.1017/s1755048312000089.

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AbstractSchool prayer represents a curiosity of Reagan era politics. Reagan and the social conservative movement secured numerous successes in accommodating religious practice and faith in the public sphere. Yet, when it came to restoring voluntary school prayer, conservatives never succeeded in securing the judicial victory that they sought despite conditions that seemingly favored change. Herein, we attempt to reconcile Reagan era successes with Reagan era failures by exploring Reagan's entrepreneurial activity to affect both the demand (i.e., judges) and supply (i.e., litigants) side of leg

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Landry, Marie L., and David Ferguson. "SimulFluor Respiratory Screen for Rapid Detection of Multiple Respiratory Viruses in Clinical Specimens by Immunofluorescence Staining." Journal of Clinical Microbiology 38, no. 2 (2000): 708–11. http://dx.doi.org/10.1128/jcm.38.2.708-711.2000.

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A new rapid direct immunofluorescence assay (DFA) respiratory screen reagent for detection of seven common respiratory viruses (respiratory syncytial virus [RSV], influenza A and B viruses, parainfluenza virus types 1 to 3, and adenovirus) was compared with standard single or dual DFA reagents and culture. In total, 1,531 respiratory samples were adequate for testing with both SimulFluor Respiratory Screen (RS) reagent (Chemicon International, Temecula, Calif.) and single or dual DFA reagents. The RS DFA reagent detected 367 (98.4%) and single or dual DFA reagents detected 368 (98.7%) of 373 D

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Sun, Jun Liang, Xin Hong Liang, Song Ling Chen, and Ying Bin Fan. "Effect of Folin Reagent from Different Sources on Protease Determination." Advanced Materials Research 662 (February 2013): 305–8. http://dx.doi.org/10.4028/www.scientific.net/amr.662.305.

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Folin reagent was one of the most important reagents in protease determination. The differences between Folin reagent from laboratory and Folin reagent sold were studied. The results showed that there was not significant difference between the absorbance of Folin reagent from lab replaced 30d and Folin reagent sold (p<0.05). The RSD of Folin reagent from lab was between 0.3and 1.67, and Folin reagent sold between 0.63 and 1.49. The precision of them was both higher. The maximum absorption wave length of the chromogenic agent of Folin reagent was with 736-755. And there was no significant di

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SAKURAI, Hideki. "New reagents. V. Reducing reagents. Reducing reagent tris(trimethyl)silane." Journal of Synthetic Organic Chemistry, Japan 48, no. 11 (1990): 1012–13. http://dx.doi.org/10.5059/yukigoseikyokaishi.48.1012.

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SHIMIZU, Makoto, and Hirosuke YOSHIOKA. "New reagents. IX. Fluorinating reagents. Silicon tetrafluoride as monofluorination reagent." Journal of Synthetic Organic Chemistry, Japan 48, no. 11 (1990): 1054–55. http://dx.doi.org/10.5059/yukigoseikyokaishi.48.1054.

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KAJIGAESHI, Shoji, and Takaaki KAKINAMI. "New reagents. X. Reagents for functionalization. Iodinating reagent: Benzyltrimethylammonium dichloroiodate." Journal of Synthetic Organic Chemistry, Japan 48, no. 11 (1990): 1062–63. http://dx.doi.org/10.5059/yukigoseikyokaishi.48.1062.

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YAMAMOTO, Yoshinori, Tadao UYEHARA, and Naoki ASAO. "New reagents. X. Reagents for functionalization. Amination reagent: Diamidecopper lithium." Journal of Synthetic Organic Chemistry, Japan 48, no. 11 (1990): 1066–67. http://dx.doi.org/10.5059/yukigoseikyokaishi.48.1066.

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Ohto, Keisuke, Hiromasa Murashima, Hiroshi Murakami, et al. "New Trident Molecule with Phosphoric Acid Functionality for Trivalent Rare Earth Extraction." Indonesian Journal of Chemistry 17, no. 3 (2017): 491. http://dx.doi.org/10.22146/ijc.26880.

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Tripodal extraction reagent with three phosphoric acid groups, together with the corresponding monopodal molecule has been prepared to investigate some metals extraction behavior, in particular, trivalent rare earth elements (REEs). The tripodal reagent exhibited extremely high selectivity for metals with high valency such as Zr(IV), In(III), Lu(III), and Fe(III). Tripodal reagent also exhibited exceptionally high extraction ability compared with the corresponding monopodal one in the extraction of trivalent rare earths. The result for the stoichiometry of tripodal reagent to heavy rare earths

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Truchon, Jean-François, and Christopher I. Bayly. "Is There a Single 'Best Pool' of Commercial Reagents to Use in Combinatorial Library Design to Conform to a Desired Product–Property Profile?" Australian Journal of Chemistry 59, no. 12 (2006): 879. http://dx.doi.org/10.1071/ch06139.

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A novel computer algorithm for library design in combinatorial chemistry, GLARE (Global Library Assessment of Reagent), is used to select an optimal subset of reagents in two related libraries according to the Lipinski rule of five applied to the products. The optimized libraries show excellent compliance with the desired profiles although the original huge libraries do not. Then we show, using ten different virtual libraries, that (a) a relatively small fraction of commercially available reagents is of general use in drug/lead-like combinatorial chemistry and (b) that between 10 and 20% of th

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Bailleul, Els, Bernard Chatelain, Anne Demulder, et al. "Influence of dabigatran and rivaroxaban on routine coagulation assays." Thrombosis and Haemostasis 113, no. 01 (2015): 154–64. http://dx.doi.org/10.1160/th14-02-0161.

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SummaryThe Belgian national External Quality Assessment Scheme performed a nationwide survey using lyophilised plasma samples spiked with dabigatran or rivaroxaban to demonstrate to the Belgian clinical laboratories how these drugs affect their routine coagulation assays prothrombin time (PT), activated partial thromboplastin time (aPTT), fibrinogen and antithrombin. Virtually all Belgian laboratories performing routine coagulation testing (189/192) participated in the survey. Both, dabigatran and rivaroxaban significantly prolonged the PT and aPTT in a concentration- and reagent-dependent man

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Sviridov, A. V., V. V. Iurchenko, I. K. Gindulin, and M. S. Roschina. "The use of high-fine modified aluminosilicate adsorbents in the processes of purification of household waste water." Proceedings of the Voronezh State University of Engineering Technologies 83, no. 4 (2022): 274–79. http://dx.doi.org/10.20914/2310-1202-2021-4-274-279.

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The article deals with the problem of treatment and purification of domestic waste water. Today, many treatment facilities do not have a reagent treatment system and are limited only by mechanical and biological methods of water treatment. We have considered the possibility of using a new scheme for reagent treatment of domestic wastewater. The existing reagent treatment at treatment facilities does not always cope with the tasks of water treatment. It is not possible to achieve the required values for many indicators: COD, residual phosphate content, residual iron content, etc. The water unde

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Loginova, M. Ye, I. A. Chetvertneva, A. M. Shammazov, E. M. Movsumzade, and N. S. Tivas. "OPTIMIZATION OF CONCENTRATIONS OF DRILLING REAGENTS BASED ON GUMS USING MATHEMATICAL MODELING METHODS." Petroleum Engineering 21, no. 1 (2023): 6–14. http://dx.doi.org/10.17122/ngdelo-2023-1-6-14.

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The article is devoted to the use of regression analysis to analyze the use of biopolymer reagents based on gums of various manufacturers — domestic reagent brand KK (Russia), foreign Kem-X (USA) and Rodopol-23R (France).The use of these reagents in the composition of drilling fluids (BR) leads to the fact that BRs exhibit pseudoplasticity properties that are necessary for accident-free passage of multi-meter horizontal intervals and qualitative penetration of productive zones at various fields in Russia, including those in the Volga-Ural region. Equations of dynamic shear stress (DPS) and eff

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E, Ranjith Kumar. "The Role of Reagents on Microstructural and Morphological Investagation of Surfactant based Synthesis of CdO Nanorods." NanoNEXT 3, no. 1 (2022): 1–4. http://dx.doi.org/10.54392/nnxt2211.

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Cadmium oxide nanostructures were prepared utilising a noval microwave irradiated wet chemical technique with sodium dodecyl benzene sulphonate as the surfactant and two distinct co-reagents (NH3 and NaOH). XRD, and FTIR were used to examine the microstructural properties of synthesised and heat-treated (300°C) CdO nanostructures. As prepared and annealed smaples, the fluctuation of crystallite size and morphology of CdO nanostructures with different co-reagents was investigated. The average crystallite size of the samples was 11.4 to 17.8 nm for the NH3 reagent and 9.7 to 16.8 nm for the NaOH

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Haulenbeek, Jonathan, and Christopher J. Beaver. "The impact of ligand binding based assays critical reagent characterization and storage." Bioanalysis 13, no. 10 (2021): 797–805. http://dx.doi.org/10.4155/bio-2020-0288.

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Biological critical reagents are the foundation of many bioanalytical methods and often chemically modified or conjugated with various chemical tags. As such, the quality and performance of these methods are inherently tied to the quality and stability of critical reagents. This article will outline recommendations for conjugated critical reagent development and characterization. Examples of the impact of regent quality will be discussed for the two common bioanalytical assays in support of drug development for biotherapeutics. Finally, a brief discussion of conjugated reagent stability and re

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