Relevant bibliographies by topics / CW 3000

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Academic literature on the topic 'CW 3000'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "CW 3000"

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Billore, S. K., N. Singh, H. K. Ram, J. K. Sharma, V. P. Singh, R. M. Nelson, and P. Dass. "Treatment of a molasses based distillery effluent in a constructed wetland in central India." Water Science and Technology 44, no. 11-12 (December 1, 2001): 441–48. http://dx.doi.org/10.2166/wst.2001.0864.

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A field-scale 4-celled, horizontal subsurface constructed wetland (CW) was installed to evaluate removal efficiencies of wastewater constituents in an industrial distillery effluent. Total and dissolved solids, NH4-N, TKN, P and COD were measured. This CW design provides four serial cells with synthetic liners and a river gravel base. The first two unplanted cells provide preliminary treatment. Specific gravel depths and ensuing biofilm growth provides anaerobic treatment in Cell 1 and anaerobic treatment in Cell 2. Cell 3 was planted with Typha latifolia with an inserted layer of brick rubble (for phosphorus removal). Locally grown reed, Phragmites karka was planted in Cell 4. COD was reduced from 8420 mg/l 3000 from Cell 1 to the outlet of Cell 4. Likewise other parameters: total and dissolved solids, ammonium and total nitrogen, and total P, indicated declining trends at the 4-celled CW effluent. This study reveals how high strength distillery wastewater strongly impacts morphology, aeration anatomy in the chiseled plant tissues, reed growth; and composition of the biofilm in the specialized substratum. The reliability of a CW for organic and nutrients reduction, in association with a poorly performing conventional system is discussed. There is an immense potential for appropriately designed constructed wetlands to improve high strength wastewaters in India.
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Vlasova, Marina, Mykola Kakazey, Pedro Aguilar, Rene Tapia, Adalberto Hernandez, Igor Mel'nikov, Yakov Fironov, and Daniel Uribe. "Processes connected with local laser heating of TiB2 armor ceramics." Science of Sintering 51, no. 2 (2019): 125–34. http://dx.doi.org/10.2298/sos1902125v.

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The process of high-temperature heating of TiB2 armor ceramics in air in a continuous and pulsed mode of laser irradiation has been studied by the X-ray diffraction and SEM methods. It has been established that, in the irradiation zone, the temperature increases up to 3000 ?C and over, resulting in the decomposition of TiB2 and appearance of ablation products, which, in passage of air, oxidize and form dense films (in the pulsed mode) or ?reticulated? films (in the CW mode) consisting of boron and titanium oxides. The mechanism of laser-induced breakdown of TiB2 ceramics is similar to the mechanism of ballistic destruction.
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Sinha, Pinaki, and Miskat Ara Akhter Jahan. "Clonal Propagation of Rhynchostylis retusa (Lin.) Blume through in vitro Culture and their Establishment in the Nursery." Plant Tissue Culture and Biotechnology 22, no. 1 (July 1, 2012): 1–11. http://dx.doi.org/10.3329/ptcb.v22i1.11242.

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For high frequency regeneration of Rhyncnostylis retusa (Lin.) Blume apical nodal segments were used. Half strength MS + 2% sucrose + 1.5 mg/l BA + 0.5 mg/l NAA + 2 g/l peptone + 10% (v/v) coconut water (CW) + 0.5 g/l activated charcoal (AC) was the best nutrient medium, on which 89% cultures induced 8 microshoots per culture. Subculture of microshoots for further 8 weeks on the same nutrient medium enhanced the number of microshoots up to 95. For further proliferation of microshoots, their development into shoots as well as formation of secondary microshoots from the base of the old ones, the best medium was half strength of MS + 2% sucrose + 2 g/l peptone + 10% (v/v) CW + 0.5 g/l AC + 150 mg/l L-glutamine. Plantlets with roots were obtained in half strength of MS + 2% sucrose + 2 g/l peptone + 10% (v/v) CW + 0.5 g/l AC + 5.0 g/l banana powder, on which cent per cent shoots rooted within eight weeks. The pH of all the categories of cultures were maintained at 5.6 before adding 2.2 g/l gelrite and autoclaving, and the cultures were incubated at 2000 - 3000 lux for 16/8 hrs light/dark at 24 ± 2ºC. Regeneration of plantlets continued due to repeated subculture of microshoots and regenerants were acclimatized and established in the nursery. Plant Tissue Cult. & Biotech. 22(1): 1-11, 2012 (June) DOI: http://dx.doi.org/10.3329/ptcb.v22i1.11242
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Blondel, Christophe, David Bresteau, and Cyril Drag. "Cavity-Enhanced Photodetachment of H− as a Means to Produce Energetic Neutral Beams for Plasma Heating." Atoms 7, no. 1 (March 1, 2019): 32. http://dx.doi.org/10.3390/atoms7010032.

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Neutral beam injection, for plasma heating, will supposedly be achieved, in ITER, by collisional detachment of a pre-accelerated D − beam. Collisional detachment, however, makes use of a D 2 -filled neutralisation chamber, which has severe drawbacks, including the necessity to set the D − -ion source at −1 MV. Photodetachment, in contradistinction, would have several advantages as a neutralisation method, including the absence of gas injection, and the possibility to set the ion source close to the earth potential. Photodetachment, however, requires a very high laser flux. The presented work has consisted in implementing an optical cavity, with a finesse greater than 3000, to make such a high illumination possible with a state-of-the-art CW (continuous-wave) laser. A 1.2 keV 1 H − -beam (only 20 times slower than the 1 MeV 2 D − ion beams to be prepared for ITER) was photodetached with more-than-50% efficiency, with only 24 W of CW laser input. This experimental demonstration paves the way for developing real-size photoneutralizers, based on the implementation of refolded optical cavities around the ion beams of neutral beam injectors. Depending on whether the specifications of the laser power or the cavity finesse will be more difficult to achieve in real scale, different architectures can be considered, with greater or smaller numbers of optical refoldings or (inclusively) optical cavities in succession, on the beam to be neutralised.
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Harianto, Agus, Muhammad Arif Hariyadi, and Edi Kurniawan Prasetyo. "STUDI EKSPERIMEN PENGARUH MEDAN MAGNET 800 GAUSS PADA ALIRAN BAHAN BAKAR PERTAMAX TERHADAP UNJUK KERJA MESIN BENSIN 150 CC." ELEMEN : JURNAL TEKNIK MESIN 2, no. 1 (June 7, 2016): 5. http://dx.doi.org/10.34128/je.v2i1.16.

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Medan magnet dapat membantu proses ionisasi pada bahan bakar, sehingga bahan bakar saat proses pembakaran dapat mudah mengikat oksigen. Pengikatan oksigen pada bahan bakar secara stoikiometri menyebabkan pembakaran lebih sempurna, sehingga torsi dan daya pada mesin dapat meningkat. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh pemasangan magnet 800 gauss terhadap torsi, daya, dan konsumsi bahan bakar spesifik motor bensin 150 CC. Penelitian ini dilakukan dengan membandingkan prestasi mesin motor bensin merk Honda Verza CW 150 CC yang dipasang magnet 800 Gauss merk X-Power pada saluran bahan bakar dengan tanpa dipasang magnet 800 Gauss merk X-Power. Setiap pengujian dilakukan pada putaran mesin 3000 rpm, 4000 rpm, 5000 rpm, 6000 rpm, dan 7000 rpm. Metode yang digunakan adalah secara eksperimen di Laboratorium Efisiensi dan Konversi Energi. Hasil penelitian menunjukkan bahwa dengan menggunakan magnet 800 gauss terjadi peningkatan torsi maksimal sebesar 0,59%, dan peningkatan daya maksimal sebesar 1%.
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Ghosh, Partha Sarathi, Abhishek Sen, Somnath Chattopadhyaya, Shubham Sharma, Jujhar Singh, Shashi Parkash Dwivedi, Ambuj Saxena, Aqib Mashood Khan, Danil Yurievich Pimenov, and Khaled Giasin. "Prediction of Transient Temperature Distributions for Laser Welding of Dissimilar Metals." Applied Sciences 11, no. 13 (June 23, 2021): 5829. http://dx.doi.org/10.3390/app11135829.

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Distribution of temperature during the welding process is essential for predicting and realizing some important welding features such as microstructure of the welds, heat-affected zone (HAZ), residual stresses, and their effects. In this paper, a numerical model was developed using COMSOL Multiphysics of dissimilar laser welding (butt joint) of AISI 316L and Ti6Al4V thin sheet of 2.5 mm thickness. A continuous mode (CW) fiber laser heat source of 300 W laser power was used for the present study. A time-dependent prediction of temperature distributions was attempted. The heat source was assumed as a Hermit–Gaussian analytical function with a moving velocity of 120 mm/min. Both convective and radiant heat loss and phase change of the materials were considered for the analysis. In addition, variation of temperature-dependent material properties was also considered. The maximum and minimum temperature for the two materials at different times and the temperature in the different penetration depths were also predicted. It was found that the average temperature that can be achieved in the bottom-most surface near the weld line was more than 2400 K, which justifies the penetration. Averages of maximum temperatures on the weld line at different times at the laser spot irradiation were identified near 3000 K.The temperature fluctuation near the weld line was minimal and decreased more in the traverse direction. Scanning with a displaced laser relative to the interface toward the Ti6Al4V side reduces the maximum temperature at the interface and the HAZ of the 316L side. All of these predictions agree well with the experimental results reported in current literature studies.
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Ciurea, Stefan O., Marcos De Lima, Pedro Cano, Martin Korbling, John McMannis, Sergio A. Giralt, Borje S. Andersson, Elizabeth J. Shpall, Richard E. Champlin, and Marcelo Fernandez-Vina. "The Presence of Moderate to High Donor-Specific Anti-HLA Antibody Titers Is Associated with a High Risk of Graft Failure in Haploidentical Stem Cell Transplantation." Blood 112, no. 11 (November 16, 2008): 3013. http://dx.doi.org/10.1182/blood.v112.11.3013.3013.

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Abstract Background and Rationale: Stem cell transplantation using alternative sources of stem cells from haploidentical relatives is an established therapy for high risk leukemia patients who lack a matched related or unrelated donor. Although efforts have been made to improve the engraftment rate in haploidentical stem cell transplantation, approximately 10–20% of these patients fail to achieve primary engraftment. The causes for this higher rate of graft failure are currently unknown. We hypothesized that anti-HLA antibodies directed against donor specific antigens (DSA) are a possible cause for graft failure in such patients. Materials and Methods: Twenty-two consecutive patients who received a T-cell depleted haploidentical graft at our institution after 9/2005 were evaluated prospectively for presence of DSA. The patients received a conditioning regimen consisting of fludarabine, melphalan and thiotepa previously described, and megadoses of CD34+ cells. The presence of antibodies against DSA was determined by testing the patients’ sera with a panel of fluorescent beads coated with single HLA antigen preparations using a Luminex™ platform; results were interpreted as fluorescence intensity (FI) against DSA mismatch. FI less then 500 was considered negative, while positive FI ranging 500–1500, 1500–3000 and >3000 were classified as weak, intermediate and strong, respectively. HLA A, B, C, DRB1, DRB3/4/5, DQB1 and DPB1 were typed by high resolution methods. Results: Of the 22 treated patients, 6 experienced primary graft failure (PGF). Five of these patients, all females with median age 39 years (range 26–50), were identified to have intermediate or strong FI anti DSA. The anti-HLA antibodies identified were directed against both HLA class I and II antigens, most commonly anti-HLA DRB1 (Table 1). After the first patient was identified to have graft failure in the presence of DSA, treatment with rituximab and plasma exchange was initiated in an attempt to decrease DSA titers and achieve engraftment. Subsequently, four patients were treated in this fashion, two of which had a significant decrease in antibody titers and achieved engraftment. The remaining 2 patients experienced also PGF. All 3 patients who had PGF underwent a second transplant from the same donors. In one of these patients who experienced two graft losses, the DSA was strong before the first transplant decreased significantly a few days after transplantation and returned to the intermediate FI range before the second transplant. Overall, 4 of 6 (67%) haploidentical transplants performed in the in the presence of DSA, and 4 of 4 (100%) transplants performed in patients with moderate to high DSA titers failed to achieve engraftment. Rituximab and plasma exchange appeared to decrease the DSA in 2 of 4 patients with moderate titers, enough to allow engraftment (Table 1). No significant differences were found in the number of CD34+ cells infused, number of allele mismatched, and number of bone marrow blasts present at the time of transplant between the PGF and the control group. The fact that all patients with DSA were females prompted a review of the pregnancy history. The median number of pregnancies was 3 in the PGF group (N=5) as compared with 0 in the control group (N=6) (P=0.1). In addition, a review of the transfusion history to explain a possible alloimmunization at least in one patient without prior pregnancies, identified a median of 37 units (range 17–65) transfused in the PGF group (N=5) as compared with 15 the control group (range 4–38) (N=16) (P=0.007). Conclusion: Donor specific anti-HLA antibodies appear to play an important role in preventing engraftment in patients receiving a (T-cell depleted) haploidentical stem cell transplant. Figure 1. Relationship between HLA antibody titers and engraftment in 5 patients who received a total of eight haploidentical transplants at MDACC. Pt # AB type Initial titer R/PE Titer after R/PE/pre first SCT Engrafted Y/N Titer after first SCT/Pre second SCT Engrafted Y/N Legend: AB – antibody, R – rituximab, PE – plasma exchange, NT – not tested 1 A*3201 N/A N + + + N NT Y 2 A*0211 + + + Y + + N + + N B*391301 + + + + + + + + Cw*0702 + + + NT NT DRB1*0404 + + + 3 DRB1*0701 + + Y - Y N/A N/A DRB1*0701 + + + + + - 4 DRB4*0101 + + + Y + + + N - Y DQB1*0202 + + + + + + - DRB1*0401 + + +/− (borderline) 5 DRB4*0103 + + Y + Y N/A N/A DPB1*0401 + + + + + +
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He, Jun, Zi-Xing Chen, Xiaojing Bao, Qiaocheng Qiu, Xiaoni Yuan, and Yang Li. "The Effect of High-Resolution Donor-Recipient HLA Matching and Mismatching Frequencies On Choosing Donor in Chinese Population for Unrelated Allo-HSCT." Blood 114, no. 22 (November 20, 2009): 4503. http://dx.doi.org/10.1182/blood.v114.22.4503.4503.

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Abstract Abstract 4503 The relative importance of various human leukocyte antigen (HLA) loci and the resolution level at which they are matched has not been fully defined for unrelated donor (URDs) transplantation. Hematopoietic stem cell transplantation (HCT) from volunteer URDs may give a chance of cure for patients with malignant hematological diseases. Although donor-recipient HLA matching is associated with better outcomes, many are not able to identify an HLA-A, -B, -C, -DRB1, DQB1 matched URD and are faced with choosing the closest matching among the available donors. The Chinese Marrow Donor Program (CMDP) has completed a retrospective high-resolution HLA typing on sufficient patient-donor pairs to analyze high resolution matching and mismatches probability at specific loci. These data are critical for selecting the best available partially HLA-matched donor for patients undergoing HLA-mismatched URD HCT. We have performed high-resolution typing for HLA-A,-B,-C,-DRB1,-DQB1 by using SBT, SSOP and SSP techniques on 1092 donors and 931 patients from the data base of CMDP. Among 1092 donors, the allele with highest frequency were HLA-A*1101, A*0201, A*2402, A*0207, A*3303, A*0206 and A*3001; HLA-B*4001, B*4601, B*5801, B*1302, B*1501, B*5101and B*1301; HLA-Cw*0102, Cw*0702, Cw*0304, Cw*0801, Cw*0602, Cw*0303, Cw*0302 and Cw*0401; HLA-DRB1*0901, DRB1*1501, DRB1*1202, DRB1*0701, DRB1*0803, DRB1*0405, DRB1*0301 and DRB1*1101; HLA-DQB1*0301, DQB1*0303, DQB1*0601, DQB1*0202, DQB1*0602, DQB1*0302, DQB1*0401, DQB1*0201 and DQB1*0502. The probability of HLA high-resolution DNA matching between 1092 donors and 931 patients(10/10 match) was 16.7%. Mismatching at a single HLA-A, -B, -C, -DRB1 or DQB1 locus (9/10) was 17.7%. A single mismatch at each locus of HLA-A, -Cw,- DRB1,- DQB1,- B was 6.8%, 6.3%, 2.0%, 1.7%, and 0.8%, respectively. Double mismatch (8/10) was 18.4%, such as loci A+ Cw(5.0%), DRB1+DQB1(4.6%) and B+ Cw(3.8%). The donor/patient pairs mismatched between allele of A*0201 and A*0206, A*0201 and A*0207, A*1101 and A*1102, B*4006 and B*4002, B*1501 and B*1527, Cw*0304 and Cw*0302, Cw*0304 and Cw*0303, DRB1*1501 and DRB1*1502, DRB1*1202 and DRB1*1201, DRB1*0406 and DRB1*0403, DRB1*1401 and DRB1*1454, DQB1*0303 and DQB1*0302, respectively, were statistically associated with lower-risk Allo-HSCT. These results suggested that high-resolution DNA matching or mismatching for HLA-A, -B, -C, -DRB1 and DQB1 alleles could be associated with better clinical outcome and higher survival. Furthermore, the identification of high risk mismatch and permissive mismatch would be beneficial for the selection of a suitable donor. Disclosures: No relevant conflicts of interest to declare.
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Hou, Jian Q., Jun He, Zi X. Chen, Xiao J. Bao, Li Yao, Wen Y. Di, Hui Zhang, and Jian Zhang. "The Gene Locus Distribution of HLA in the Chinese Population by High Resolution Typing of HLA-A,B,C,DR,DQ and Its Effect on Stem Cell Transplantation." Blood 108, no. 11 (November 16, 2006): 3037. http://dx.doi.org/10.1182/blood.v108.11.3037.3037.

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Abstract Allogeneic hematopoietic stem cell transplantation (AHSCT)can potentially cure a variety of hematopoietic and congenital metabolic disorders. Ideally, one would hope to find identical unrelated donors who are genotypically identical to the patients at all HLA loci. To explore distribution of HLA gene subsites in the Chinese population and its effect on AHSCT. High resolution typing of HLA-A,B,Cw,DR,DQ were performed on 101 cases from the data base of China Marrow Donor Program (CMDP) donors and 76 patients (ALL 23cases, CML 32cases, AML 23cases)by using PCR-SSP and PCR-SSO. The HLA subsites with highest gene frequency were A*0201, A*0207, A*1101, A*2402, B*4001,B*4601, C*0102, C*0702, DR*0901, DR*1202,DQ*0301and DQ*0303(PF>0.2). The subsites with secondary high frequency were A*3101,A*3303,B*1301,B*1302,B*1501, B*5101,B*5801,C*0303,C*0304,C*0602,C*0801, DR*0405, DR*0406,DR*0701,DR*0803, DR*1501,DQ*0202,DQ*0302,DQ*0401, DQ*0502, DQ*0601(PF>0.1). The phenotypic frequency of A*1101,B*4601,C*0102,DR*0901, DQ*0303 in the Chinese population was as high as 0.38, Among which B*4601and DR*0901 were the single allele with highest frequency. The gene locus in HLA with linkage disequilibrium were A*0207-B*4601- DR*0901-C*0102-DQ*0301or0303;A*0201-B*4601-DR*0405 or DR*0803- C*0102-DQ*0302orDQ*0502;A*3001-B*1302-DR*0701-C*0602-DQ*0202 and A*3303- B*5801-DR*0901-C*0302-DQ*0303 or DQ*0302, respectively. CMDP demonstrated the effect of HLA-A and B allele matching on the development of severe acute GVHD and on the overall survival rate. HLA-DR matching are less effective than classIfor clinical outcomes. Additionally, the HLA-C mismatch was found to have a synergistic effect on the acute GVHD and survival rate when another HLA locus mismatch coexisted. Our results demonstrated that the frequency distribution of HLA gene subsites is important for selecting more suitably matched donor for HSCT and is helpful for making donor recruitment strategy. As the HLA-Cw played important role on aGVHD occurrence and the failure of BMT, more attention should be paied on HLA-Cw allele in clinical HSCT.
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Huang, He, Gongqiang Wu, Xiaoyu Lai, Yamin Tan, Yi Luo, and Faming Zhu. "The Distribution of KIR Gene in Chinese Population and the Effect of Donor KIR and Patient HLA Genotypes on Outcome Following Allogeneic Hematopoietic Stem Cell Transplantation." Blood 112, no. 11 (November 16, 2008): 2236. http://dx.doi.org/10.1182/blood.v112.11.2236.2236.

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Abstract Killer cell immunoglobulin-like receptors (KIR) are a family of inhibitory and activatory receptors and are expressed by most NK cells. The interaction between KIR and human leukocyte antigen (HLA) molecules expressed on target cells is known to modulate the cytolytic activity of NK cells. At present, seventeen KIR genes have been identified, and the number of KIR gene loci has been reported to vary among individuals, resulting in a heterogeneous array of KIR genes in different populations. KIR haplotypes are divided into two distinctive groups based on their gene contents. Ruggeri, et al, first reported that KIR-ligand mismatch can alleviate aGVHD, reduce relapse and improve disease-free survival in mismatched hematopoietic stem cell transplants, while some studies show that this kind of mismatch is deleterious. Now the effect of NK cells alloreactivity on outcome of hematopoietic stem cell transplantation remains controversial. Our study is to analyze the KIR gene contents and investigate the impact of KIR-ligand mismatch on outcome following hematopoietic stem cell transplantation in Chinese population. METHODS: 203 cases of allogeneic hematopoietic stem cell transplantation between Jan. 2001 to May. 2008 were involved in the study. KIR genes were typed by using PCR-SSP, and HLA-A, -B and -C loci genes were used by PCR-SSP or PCR-SSO technology. KIR-ligand incompatibility were assessed based on HLA-Cw (divided into C1 and C2 group) and three major inhibiting KIR genotypes (KIR2DL1, KIR2DL2 and KIR2DL3) of 203 donor/recipient pairs. These patients received myeloablative (n=180) or nonmyeloablative (n=23, with ATG) conditioning followed by hematopoietic stem cell transplantation from HLA matched (n=164) or mismatched (n=39) donors. All patients received mycophenolate mofetil (MMF) combined with CsA and short course MTX regimen as prophylaxis for aGVHD. RESULTS: All seventeen KIR genes were observed in the Chinese population. Framework genes KIR3DL3, KIR3DP1, KIR2DL4 and KIR3DL2 were present in all individuals. The most frequent non-framework KIR genes were: KIR2DL1 (99.5%), KIR3DL1 (97.0%), KIR 2DS4 (97.5%), KIR2DL3 (99.5%) and KIR2DP1 (99.5%). The other gene frequencies were KIR2DS2 (25.1%), KIR2DL2 (25.6%), KIR2DL5A (32.5%), KIR2DL5B (30.0%), KIR2DS5 (23.6%), KIR2DS1 (43.8%), KIR2DS3 (21.2%) and KIR3DS1 (34.0%). The most prevalent haplotype group found in the population was A haplotype. Group A haplotypes outnumbered group B haplotypes in frequency by approximately 3:1, with individuals having two group A haplotypes accounting for 48.8% (99/203). HLA genotyping showed that 156 out of 203 (76.8%) donor-recipient pairs could be characterized by lack of recipient HLA-Cw ligand for donor KIR2DL1, KIR2DL2/2DL3. KIR-ligand mismatch was not associated with any deleterious or beneficial influence on relapse or overall survival (OS) in Chinese population with hematopoietic stem cell transplantation. But KIR-ligand mismatch could lead to a decreased incidence of aGVHD (36.1% vs 56.3%, P=0.018). When donor NK cells had KIR2DS2 gene, the recipient acquired a decreased incidence of aGVHD (13.2% vs 49.3%, P<0.001), and had better OS (20.8% vs 34.7%, P=0.041). We also found that the presence of donor KIR2DS5 have a positive effect on aGVHD (25.0% vs 44.5%, P=0.011), however, it didn’t improve OS (27.1% vs 32.9%, P=0.197). There was almost no effect on relapse rate even if donor expressed KIR2DS2 or KIR2DS5. CONCLUSION: Our data demonstrated that Chinese population was distinct in KIR gene frequencies and putative KIR haplotypes in comparison to some other populations. KIR-HLA mismatch was not any better effect on relapse, OS, but it had a better effect on aGVHD. Donors with gene KIR2DS2 or KIR2DS5 were associated with lower incidence of aGVHD in allogeneic hematopoietic stem cell transplantation.
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Dissertations / Theses on the topic "CW 3000"

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Radüntz, Thea. "Kontinuierliche Bewertung psychischer Beanspruchung an informationsintensiven Arbeitsplätzen auf Basis des Elektroenzephalogramms." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät, 2016. http://dx.doi.org/10.18452/17417.

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Die Informations- und Kommunikationstechnologien haben die Arbeitswelt grundlegend verändert. Durch den Einsatz komplexer, hochautomatisierter Systeme werden an die kognitive Leistungsfähigkeit und Belastbarkeit von Arbeitnehmern hohe Anforderungen gestellt. Über die Ermittlung der psychischen Beanspruchung des Menschen an Arbeitsplätzen mit hohen kognitiven Anforderungen wird es möglich, eine Über- oder Unterbeanspruchung zu vermeiden. Gegenstand der Dissertation ist deshalb die Entwicklung, Implementierung und der Test eines neuen Systems zur kontinuierlichen Bewertung psychischer Beanspruchung an informationsintensiven Arbeitsplätzen auf Basis des Elektroenzephalogramms. Im theoretischen Teil der Arbeit werden die Konzepte zur Definition der psychischen Beanspruchung und Modelle zur Beschreibung der menschlichen Informationsverarbeitung zusammengestellt. Die Auswertung einer Reihe von Experimenten ist die Basis für die Konzeption und den Test des neuen Systems zur Indexierung der psychischen Beanspruchung. Die Aufgabenbatterie, die Stichprobenbeschreibung, der Versuchsaufbau und -ablauf sind Bestandteil des experimentellen Teils der Arbeit. Während der Aufgabenlösung wird von den Probanden das Elektroenzephalogramm mit 25 Kanälen abgeleitet. Es folgt eine Artefakteliminierung, für die ein neues automatisch und in Echtzeit arbeitendes Verfahren entwickelt wurde. Die Klassifikation und damit die Indexierung von Segmenten des Elektroenzephalogramms in die Klassen niedriger, mittlerer oder hoher Beanspruchung erfolgt auf Basis einer ebenfalls neu entwickelten Methode, deren Grundlage Dual Frequency Head Maps sind. Damit ist ein vollständiges System entstanden, das die einzelnen Verfahrensschritte integriert und die Aufgabenstellung der Arbeit erfüllt: Es kann an informationsintensiven Arbeitsplätzen eingesetzt werden, um kontinuierlich die Bewertung der psychischen Beanspruchung auf Basis des Elektroenzephalogramms vorzunehmen.
Advanced information and communication technology has fundamentally changed the working environment. Complex and highly automated systems impose high demands on employees with respect to cognitive capacity and the ability to cope with workload. The registration of mental workload of employees on-site at workplaces with high cognitive demands enables preventing over- or underload. The subject of this dissertation is therefore the development, implementation and testing of a novel system for continuous assessment of mental workload at information intensive workplaces on the basis of the electroencephalogram. In the theoretical section of the thesis concepts for defining mental workload are given; furthermore, models for describing human information processing are introduced and the relevant terminology such as strain, workload, and performance is clarified. Evaluation of an array of experiments with cognitive tasks forms the basis for the conceptual design and testing of the novel system for indexing mental workload. Descriptions of these tasks, the sample, the experimental set-up and procedure are included in the experimental section. The electroencephalogram with 25 channels was recorded from the subjects while performing the tasks. Subsequently, an artifact elimination was carried out, for which a new, automated, and real-time capable procedure has been developed. Segments from the electroencephalogram are classified and thusly indexed into classes of low, medium, and high workload on the basis of a likewise newly developed method, whose central element are Dual Frequency Head Maps. Hence, a complete system emerges that integrates the single processing steps and satisfies the scope of this thesis: It can be applied on-site at information intensive workplaces for continuous assessment of mental workload on the basis of the electroencephalogram.
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Dilwith, Jason. "Feasibility Study of Laser Ablation using Long Pulsed 300W, CW Single Mode Fiber Laser." NCSU, 2005. http://www.lib.ncsu.edu/theses/available/etd-06132005-191622/.

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Many applications now require micro sized holes that are difficult to produce with conventional methods. The entrance of lasers in the industry has brought about a better method for producing these holes. However the ultra-short pulse lasers that are normally used are extremely expensive and require many pulses to remove the material due to the small amount of energy they deposit. The objective of this research is to examine the feasibility of laser ablation using a 300W, CW Single Mode fiber laser which has high continuous power output for each pulse and has excellent beam quality. The results show that laser ablation occurs when a 100mm lens is used with pulse durations at 40 microseconds or below. Using one 18 microsecond pulse, a blind hole of 43.6 microns in diameter and 23.6 microns in depth with an aspect ratio of 0.54 can be created with little heat affected zone. This performance is comparable to nanosecond lasers, but with much higher hole depth per pulse. It was also found that the pulse duration must be short enough so that the ablating effect of the initial spike of an enhanced pulse is not nullified due to melting. At longer pulse durations (50 microseconds or more), raised surfaces are created instead of holes.
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Conference papers on the topic "CW 3000"

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Qureshi, G., M. H. Nguyen, N. R. Saad, and R. N. Tadros. "Heat Transfer Measurements for Rotating Turbine Discs." In ASME 1989 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1989. http://dx.doi.org/10.1115/89-gt-236.

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To optimise the turbine disc weight and coolant flow requirements, the aspect of improving thermal analysis was investigated. As a consequence, an experimental investigation was undertaken to measure the rates of convective heat transfer. The constant temperature steady state technique was used to determine the local and average heat transfer coefficients on the sides of rotating discs. The effects of coolant flow rates, CW (3000 ≤ CW ≤ 18600) with two types of cavity in-flow conditions and of the rotational speeds, Reθ (from 4×105 to 1.86×106) on the disc heat transfer were studied and correlations developed. For a rotating disc in confined cavities with superimposed coolant flows, Nusselt numbers were found to be higher than those for the free rotating disc without confinement.
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Xiong, Lingling, Min Wang, Xiaobiao Wang, Yanfang Zheng, Di Wu, Pu Zhang, Xiaoning Li, Zhenfu Wang, and Xingsheng Liu. "3000W CW diode laser cladding system." In SPIE LASE, edited by Mark S. Zediker. SPIE, 2012. http://dx.doi.org/10.1117/12.909599.

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Saito, Teruo, Tomoaki Nakamo, Yoshinori Tatematsu, Seitaro Mitusdo, Toshitaka Idehara, and Vladimir E. Zapevalov. "Operation improvement of CW 300 GHz gyrotron FU CW I." In 2008 33rd International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2008). IEEE, 2008. http://dx.doi.org/10.1109/icimw.2008.4665740.

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Saito, T., T. Nakano, K. Sakai, I. Ogawa, S. Mitsudo, Y. Tatematsu, T. Idehara, and V. E. Zapevalov. "Analysis of Radiation Pattern of 300 GHz CW Gyrotron FU CW I." In 2007 IEEE International Vacuum Electronics Conference. IEEE, 2007. http://dx.doi.org/10.1109/ivelec.2007.4283357.

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Glukhikh, I. V., S. S. Polikarpov, A. V. Stepanov, and S. V. Frolov. "Unstable Resonator for Diode Pumped 300W CW Nd:Yag laser." In 2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference. IEEE, 2007. http://dx.doi.org/10.1109/cleoe-iqec.2007.4385879.

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Saito, T., T. Idehara, S. Mitsudo, I. Ogawa, H. Hoshizuki, H. Murase, K. Sakai, et al. "Oscillation Characteristics of CW 300 GHz Gyrotron FU CWI." In >2006 Joint 31st International Conference on Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics. IEEE, 2006. http://dx.doi.org/10.1109/icimw.2006.368233.

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7

Kanno, Atsushi, Norihiko Sekine, Akifumi Kasamatsu, Naokatsu Yamamoto, and Tetsuya Kawanishi. "Optical-fiber-connected 300-GHz FM-CW radar system." In SPIE Defense + Security, edited by David A. Wikner and Duncan A. Robertson. SPIE, 2017. http://dx.doi.org/10.1117/12.2262505.

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Glukhikh, Igor V., Sergey A. Dimakov, Sergey V. Frolov, and Sergey S. Polikarpov. "300W CW diode pumped Nd:YAG laser with improved divergence of output beam." In Lasers and Applications in Science and Engineering, edited by Alexis V. Kudryashov, Alan H. Paxton, and Vladimir S. Ilchenko. SPIE, 2008. http://dx.doi.org/10.1117/12.762681.

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Kanno, Atsushi, Norihiko Sekine, Yoshinori Uzawa, Iwao Hosako, and Tetsuya Kawanishi. "300-GHz FM-CW radar system by optical frequency comb generation." In 2015 European Microwave Conference (EuMC 2015). IEEE, 2015. http://dx.doi.org/10.1109/eumc.2015.7345824.

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Kovshov, Yurii, Sergey Ponomarenko, Sergey Kishko, Alexander Likhachev, Alexander Danik, Ludmila Mospan, Sergiy Steshenko, Eduard Khutoryan, and Alexei Kuleshov. "Demonstration of a Mode Transformation Effect in 300-GHz CW Clinotron." In 2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET). IEEE, 2018. http://dx.doi.org/10.1109/mmet.2018.8460346.

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