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Academic literature on the topic '350/.001'

Author: Grafiati

Published: 28 July 2024

Last updated: 30 July 2024

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Journal articles on the topic "350/.001"

1

He, Zhiqiao, Yan Yu, Da Wang, Juntao Tang, Jianmeng Chen, and Shuang Song. "Photocatalytic reduction of carbon dioxide using iodine-doped titanium dioxide with high exposed {001} facets under visible light." RSC Advances 6, no. 28 (2016): 23134–40. http://dx.doi.org/10.1039/c5ra26761g.

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2

O. Abe, Owen, Zanlin Qiu, Joerg R. Jinschek, and Pelagia-Irene Gouma. "Effect of (100) and (001) Hexagonal WO3 Faceting on Isoprene and Acetone Gas Selectivity." Sensors 21, no. 5 (2021): 1690. http://dx.doi.org/10.3390/s21051690.

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The hexagonal WO3 polymorph, h-WO3, has attracted attention due to its interatomic channels, allowing for a greater degree of intercalation compared to other WO3 polymorphs. Our research group has previously demonstrated h-WO3 to be a highly sensitive gas sensing material for a flu biomarker, isoprene. In this work, the gas sensing performance of this polymorph has been further investigated in two distinct configurations of the material produced by different processing routes. The first sample was synthesized using Na2WO4·2H2O and showed (100) faceting. The second sample was synthesized using WCl6 and showed (001) faceting. The gas sensing response of the nanostructured films deposited using the (100) textured h-WO3 sample 1 had a higher response to acetone at 350 °C. The (001) textured h-WO3 sample 2 favored isoprene at 350 °C. The selectivity of the latter to isoprene is explained in terms of the dangling bonds present on the (001) facets. The tungsten and oxygen dangling bonds present on the (001) plane favor the adsorption of the isoprene molecule over that of the acetone molecule due to the oxygen containing dipole present in the acetone molecule.

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3

อุดร, วาติยา, та ประภาพร จินันทุยา. "ปัจจัยที่มีความสัมพันธ์กับคุณภาพชีวิตในผู้ป่วยมะเร็งโลหิตวิทยาที่ได้รับยาเคมีบำบัด". Journal of Thailand Nursing and Midwifery Council 38, № 01 (2023): 21–36. http://dx.doi.org/10.60099/jtnmc.v38i01.260163.

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บทนำ: มะเร็งทางโลหิตวิทยาเป็นหนึ่งในสิบของมะเร็งที่เป็นปัญหาสาธารณสุขที่สำคัญทั่ว โลกและในประเทศไทย และจำนวนผู้ป่วยรายใหม่เพิ่มขึ้นในช่วงไม่กี่ปีที่ผ่านมา ทำให้เป็นภาระ โรคที่สำคัญต่อสุขภาพและคุณภาพชีวิตของผู้ป่วย วัตถุประสงค์ของการวิจัย: เพื่อศึกษาระดับคุณภาพชีวิตของผู้ป่วยมะเร็งโลหิตวิทยาระหว่างการ ได้รับยาเคมีบำบัดใน 3 ด้าน ได้แก่ ด้านการรับรู้อาการ ด้านการทำหน้าที่ และด้านสุขภาพและคุณภาพชีวิต โดยรวม และศึกษาปัจจัยที่มีความสัมพันธ์กับคุณภาพชีวิตทั้ง 3 ด้าน ได้แก่ ปัจจัยภาพสะท้อนความคิดจาก การเจ็บป่วย ปัจจัยความรู้เกี่ยวกับโรคและการรักษาด้วยยาเคมีบำบัด ปัจจัยความเครียด และปัจจัย การสนับสนุนทางสังคม โดยใช้ทฤษฎีการเปลี่ยนผ่านของเมลิส (Meleis) เป็นกรอบแนวคิดในการทำวิจัย การออกแบบวิจัย: การวิจัยเชิงบรรยายหาความสัมพันธ์ การดำเนินการวิจัย: กลุ่มตัวอย่างเป็นผู้ป่วยโรคมะเร็งโลหิตวิทยาที่ได้รับยาเคมีบำบัด ที่มารับ บริการที่คลินิกโลหิตวิทยา โรงพยาบาลระดับตติยภูมิแห่งหนึ่ง ในกรุงเทพมหานคร คัดเลือกกลุ่มตัวอย่าง แบบเจาะจงตามเกณฑ์จำนวน 116 ราย รวบรวมข้อมูลโดยใช้แบบสอบถาม ประกอบด้วย แบบบันทึก ข้อมูลส่วนบุคคล การเจ็บป่วยและการรักษา แบบสอบถามภาพสะท้อนความคิดจากการเจ็บป่วย แบบสอบถามความรู้เกี่ยวกับโรคและการรักษาด้วยยาเคมีบำบัด แบบประเมินความรู้สึกเครียด แบบประเมินการสนับสนุนทางสังคม และแบบประเมินคุณภาพชีวิต เครื่องมือทั้งหมดผ่านการตรวจสอบ ความถูกต้องของเนื้อหาโดยผู้เชี่ยวชาญ ความน่าเชื่อถือของเครื่องมือผ่านการทดสอบโดยใช้ค่า สัมประสิทธิ์แอลฟาครอนบาคและ Kuder Richardson-20 ตามประเภทของแบบสอบถาม วิเคราะห์ข้อมูล โดยสถิติเชิงพรรณนาและทดสอบความสัมพันธ์โดยสถิติสหสัมพันธ์ของเพียร์สัน ผลการวิจัย: พบว่าระดับคะแนนคุณภาพชีวิตของผู้ป่วยโรคมะเร็งโลหิตวิทยาที่ได้รับยา เคมีบำบัดทั้ง 3 ด้านอยู่ในระดับสูง ปัจจัยที่มีความสัมพันธ์กับคุณภาพชีวิตทั้ง 3 ด้าน คือ ภาพสะท้อน ความคิดจากการเจ็บป่วย และความเครียด โดยพบว่ามีความสัมพันธ์เชิงบวกอย่างมีนัยสำคัญทางสถิติ กับคุณภาพชีวิตด้านการรับรู้อาการ (r = .401, p < .001; r = .396, p < .001 ตามลำดับ) และมี ความสัมพันธ์เชิงลบกับคุณภาพชีวิตด้านการทำหน้าที่ (r = -.518, p < .001; r = -.350, p < .001 ตามลำดับ) และคุณภาพชีวิตด้านสุขภาพและคุณภาพชีวิตโดยรวม (r = -.461, p < .001; r = -. 275, p < .01 ตามลำดับ) ส่วนปัจจัยด้านความรู้เกี่ยวกับโรคและการรักษาด้วยยาเคมีบำบัด และการ สนับสนุนทางสังคมไม่มีความสัมพันธ์อย่างมีนัยสำคัญทางสถิติกับคุณภาพชีวิต ข้อเสนอแนะ: การติดตามประเมินคุณภาพชีวิตของผู้ป่วยมะเร็งโลหิตวิทยาที่ได้รับยาเคมีบำบัด ในแต่ละด้านโดยพยาบาลวิชาชีพและทีมสุขภาพโดยเฉพาะในระยะเปลี่ยนผ่านจากภาวะเจ็บป่วย ร่วมกับการส่งเสริมภาพสะท้อนความคิดจากการเจ็บป่วยในเชิงบวก และลดความเครียด จะเป็น ประโยชน์ในการช่วยเพิ่มคุณภาพชีวิตที่ดีในทุกด้านของผู้ป่วย

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Vetrone, J., C. M. Foster, G.-R. Bai, A. Wang, J. Patel, and X. Wu. "Growth, microstructure, and resistivity of RuO2 thin films grown by metal-organic chemical vapor deposition." Journal of Materials Research 13, no. 8 (1998): 2281–90. http://dx.doi.org/10.1557/jmr.1998.0318.

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Polycrystalline RuO2 thin films were grown by metal-organic chemical vapor deposition (MOCVD) on both SiO2/Si(001) and Pt/Ti/SiO2/Si(001) substrates. Films having a controllable and reproducible structural texture and phase purity were synthesized by carefully controlling deposition parameters. Moderate growth temperatures (∼350 °C) and low growth rates (<30 Å/min) produced highly (110)-textured RuO2 films. Highly (101)-textured RuO2 films were favored at slightly lower temperatures (∼300 °C) and much higher growth rates (>30 Å/min). The most conductive RuO3 films had resistivities of 34 to 40 µΩ−cm at 25 °C, an average grain size of 65 ± 15 nm, and a surface roughness (rms) of 3 to 10 nm. Both single-phase Ru and mixed Ru/RuO2 phase material were also fabricated at low temperatures (<350 °C) by using lower oxygen flow concentrations (<10%).

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Chen, M., Z. L. Pei, X. Wang, C. Sun, and L. S. Wen. "Dependence of structural, electrical, and optical properties of ZnO:Al films on substrate temperature." Journal of Materials Research 16, no. 7 (2001): 2118–23. http://dx.doi.org/10.1557/jmr.2001.0288.

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ZnO:Al (ZAO) films were deposited on fused silica substrates heated to 350 °C by dc magnetron reactive sputtering from a Zn target mixed with 1.5 wt% Al. Films deposited on a substrate heated to a temperature between room temperature and 300 °C were (001)-oriented crystals, but those grown at 350 °C consisted of crystallites with (001) and (101) orientations. The dependence of electrical properties such as resistivity, carrier concentration, and Hall mobility on temperature was measured. The results indicate that the carrier concentration and Hall mobility increase with increasing temperature up to 250 °C, though the Al content remains unchanged in this temperature range. The probable mechanisms are discussed. The minimum resistivity of ZAO films is 4.23 × 10−4 Ω cm, with a carrier concentration of 9.21 × 1020 cm−3 and a Hall mobility of 16.0 cm2 v−1 s−1. The films show a visible transmittance of above 80%.

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6

O’Doherty, J. V., C. S. Nolan, J. J. Callan, and P. McCarthy. "The interaction between lactofeed level and soya-bean meal on growth performance of weanling pigs." Animal Science 78, no. 3 (2004): 419–27. http://dx.doi.org/10.1017/s1357729800058823.

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AbstractA 3 ✕ 2 factorial experiment was conducted to investigate the interaction between lactofeed 70 (LF70) (860 g/kg whey permeate, 140 g/kg soya-bean meal, Volac International, UK) levels and soya-bean meal inclusion (SBM) (90 and 225 g/kg) from day 0 to day 25 after weaning (starter period) on growth performance and diet digestibility. A common diet was offered from day 25 to day 38. Dietary treatments were established by substituting LF70 for extruded wheat and soya-bean meal for potato protein (PP) and soya protein concentrate (SPC). Digestible energy and amino acids were maintained by adjusting soya oil and synthetic amino acids. A total of 252 pigs (7·7 kg and 28 ± 2 days of age) were allotted randomly to six treatments containing (1) 0 LF70 with 40 g/kg PP and 40 g/kg SPC and 90 g/kg SBM (2) 0 LF70 with 225 g/kg SBM (3) 175 g/kg LF70 with 40 g/kg PP and 40 g/kg SPC and 90 g/kg SBM (4) 175 g/kg LF70 with 225 g/kg SBM (5) 350 g/kg LF70 with 40 g/kg PP, 40 g/kg SPC and 90 g/kg SBM and (6) 350 g/kg LF70 with 225 g/kg SBM. There was an increase in average daily gain (ADG) (0·182 v. 0·292 v. 0·318 kg, s.e. 0·0089; P < 0·001) and food intake (0·413 v. 0·472 v. 0·489 kg, s.e. 0·0139; P < 0·01) and an improvement in food conversion ratio (FCR) (2·31 v. 1·63 v. 1·55 kg, s.e. 0·037; P < 0·001) as the level of LF70 increased during the starter period. From day 25 to day 38, the pigs given the starter diets containing no LF70 had an improved ADG (P < 0·05) and FCR (P < 0·001) compared with the pigs given 175 and 350 g/kg LF70. The pigs offered diets containing 350 g/kg lactofeed had a significantly higher N digestibility (P < 0·05) than the pigs offered diets containing no lactofeed. There was a significant interaction (P < 0·001) between LF70 and SBM in the apparent digestibility of gross energy (GED). Pigs given higher SBM diets had a higher GED at the 350 g/kg LF70 inclusion than pigs given PP + SPC diets. However, there was no difference in GED at the 0 and 175 g/kg LF70 inclusion. In conclusion, the inclusion of LF70 increased ADG, food intake and apparent N digestibility and improved FCR.

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Gao, Y., Y. J. Kim, and S. A. Chambers. "Preparation and characterization of epitaxial iron oxide films." Journal of Materials Research 13, no. 7 (1998): 2003–14. http://dx.doi.org/10.1557/jmr.1998.0281.

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Well-ordered, pure-phase epitaxial films of FeO, Fe3O4, and γ–Fe2O3 were prepared on MgO(001) by oxygen-plasma-assisted MBE. The stoichiometries of these thin films were controlled by varying the growth rate and oxygen partial pressure. Selective growth of γ–Fe2O3 and α–Fe2O3 was achieved by controlling the growth conditions in conjunction with the choice of appropriate substrates. Growth of the iron oxide epitaxial films on MgO at ≥350 °C is accompanied by significant Mg outdiffusion. The FeO(001) film surface exhibits a (2 × 2) reconstruction, which is accompanied by a significant amount of Fe3+ in the surface region. Fe3O4 (001) has been found to reconstruct to a structure. γ–Fe23 (001) film surface is unreconstructed.

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Киреева, И. В., Ю. И. Чумляков, З. В. Победенная та Е. C. Марченко. "Влияние старения в мартенсите на ориентационную зависимость предела текучести B2-фазы и эффект памяти формы в монокристаллах сплава Ti-40Ni-10Cu". Письма в журнал технической физики 49, № 7 (2023): 32. http://dx.doi.org/10.21883/pjtf.2023.07.54919.19386.

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For the [001]-and [-123] -oriented single crystals of the Ti–40Ni–10Cu alloy, it was shown for the first time that martensite ageing at 250 MPa leads to a strong orientation dependence of the B2-phase yield stress under tension, which is weakly manifested in the initial crystals. The maximum increase in the B2-phase yield stress by 350 MPa compared with the initial state was found in the [001]-oriented crystals. At external tensile stresses of 100 MPa, the shape memory effect in [001]-oriented crystals was 4±0.2% in the initial state and increased to 5±0.2% after martensite ageing, while in [-123] orientation, on the contrary, it decreased from 8.7±0.2% to 5.4±0.2%.

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Kireeva I. V., Chumlyakov Yu. I., Pobedennaya Z. V., and Marchenko E. S. "Effect of martensite ageing on the orientation dependence of the B2-phase yield stress and the shape memory effect in Ti-40Ni-10Cu alloy single crystals." Technical Physics Letters 49, no. 4 (2023): 30. http://dx.doi.org/10.21883/tpl.2023.04.55872.19386.

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For the [001]- and [123]-oriented single crystals of the Ti-40Ni-10Cu alloy, it was shown for the first time that martensite ageing at 250 MPa leads to a strong orientation dependence of the B2-phase yield stress under tension, which is weakly manifested in the initial crystals. The maximum increase in the B2-phase yield stress by 350 MPa compared with the initial state was found in the [001]-oriented crystals. At external tensile stresses of 100 MPa, the shape memory effect in [001]-oriented crystals was 4.0± 0.2% in the initial state and increased to 5.0± 0.2% after martensite ageing, while in [123] orientation, on the contrary, it decreased from 8.7± 0.2% to 5.4± 0.2%. Keywords: Single crystals, Martensite ageing, B2-phase, Shape memory effect, Tension.

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Lenart, Sylvia, and Nayak L. Polissar. "Comparison of 2 Methods for Postpyloric Placement of Enteral Feeding Tubes." American Journal of Critical Care 12, no. 4 (2003): 357–60. http://dx.doi.org/10.4037/ajcc2003.12.4.357.

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• Background Multiple techniques are available for postpyloric placement of feeding tubes. Administration of metoclopramide and air insufflation are easily accomplished at the bedside. Variable success rates have been reported for both procedures. • Objectives To determine which method, administration of 10 mg of metoclopramide or gastric insufflation of 350 mL of air, is superior for successful postpyloric placement of feeding tubes at the bedside. • Methods A prospective trial consisting of 60 adult patients randomized to have a feeding tube placed by 1 of 2 methods, either after intravenous administration of 10 mg of metoclopramide or via gastric insufflation of 350 mL of air. Placement results were confirmed by radiography. • Results Among patients receiving narcotics, the 72% successful placement rate with insufflation was significantly better than the 11% success rate achieved with metoclopramide (P &lt; .001). Among the narcotic-free patients, the 83% success rate with metoclopramide was not significantly better than the 58% success rate with insufflation (P = .37). The difference in treatment effect between narcotic and narcotic-free groups was significant (P &lt; .001). • Conclusion Patients receiving narcotics should have feeding tubes placed via the air insufflation technique. The use of continuous or regularly scheduled administration of narcotics significantly decreases the effectiveness of metoclopramide in successful placement of feeding tubes.

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Books on the topic "350/.001"

1

Satterlee, Michael. Cisco CCIE practice exam & review 350-001. McGraw-Hill/Osborne, 2002.

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Satterlee, Michael. Cisco CCIE Practice Exam & Review 350-001. McGraw-Hill Companies, 2001.

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Satterlee, Michael. Cisco CCIE Practice Exam & Review 350-001. McGraw-Hill Companies, 2001.

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Hoek, Andrew Van. Routing and Switching Cheat Sheet: Exam 350-001. Macmillan Publishers Limited, 2000.

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Benjamin, Henry, Dmitry Bokotey, and Thomas M. Thomas II. CCIE Routing and Switching Exam Cram (Exam: 350-001). Coriolis Group Books, 2000.

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Menga, Justin. CCIE Routing and Switching Exam Cram Exam 350-001. Coriolis Group Books, 2002.

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Netcare, Lucent. CCIE Prep Kit 350-001 Routing and Switching (Exam Guide). Que, 2000.

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CCIE Routing and Switching Exam Quick Reference: Exam 350-001 V3. 1. Pearson Education, Limited, 2007.

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Budget-Maximizing Bureaucrat: Appraisals and Evidence. University of Pittsburgh Press, 1991.

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(Editor), Stephane Dion, ed. The Budget-Maximizing Bureaucrat: Appraisals and Evidence (Pitt Series in Policy and Institutional Studies). University of Pittsburgh Press, 1991.

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Book chapters on the topic "350/.001"

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Tudpor, Kukiat, Chatcharida Saisawai, Sasina Kaewpho, and Amaraporn Jitseeda. "Psychological Stress Is a Risk Factor for Type 2 Diabetes Mellitus in College Students." In pHealth 2021. IOS Press, 2021. http://dx.doi.org/10.3233/shti210619.

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Type 2 diabetes mellitus (T2DM) is multifactorial disease. This cross-sectional study was aimed to investigate relationship between stress and risk for T2DM in college students. Seven-hundred participants (350 T2DM risk and 350 non-T2DM risk groups). Stress index levels and heart rate variability (HRV) were respectively measured as primary and secondary outcomes. Results showed that both T2DM-risk and non-T2DM-risk groups had temporary stress, but the T2DM-risk group had significantly higher level of psychological stress (P < .001). For the HRV, the T2DM-risk group had significantly lower levels of parasympathetic proxies (lnHF, SDNN, and RMSSD) (P < .001). Chi-square (χ2) test showed significant correlation of the stressful state with T2DM risk (χ2 = 159.372, P < .001, odds ratio (OR) = 9.326). In conclusion, psychological stress is a risk factor for T2DM in college students. Early detection, monitoring, and treatments of psychological stress should be implemented in this group of population.

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Becker, Richard C., and Frederick A. Spencer. "Platelet Antagonists." In Fibrinolytic and Antithrombotic Therapy. Oxford University Press, 2006. http://dx.doi.org/10.1093/oso/9780195155648.003.0039.

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Antithrombotic and fibrinolytic drugs impair normal hemostasis and, as a result, increase the risk for hemorrhage. It is important to consider that many treatment strategies include agents of differing classes (platelet antagonists, anticoagulants, fibrinolytics) and categories (aspirin, clopidogrel, glycoprotein [GP] IIb/IIIa receptor antagonists), creating a multisite and/or hemostatic phase defect. Platelet antagonists, by impairing primary hemostasis, are associated most often with hemorrhage involving the skin and mucous membranes; however, the gastrointestinal and genitourinary tracts may occasionally be involved. Fixed-dose unfractionated heparin (UFH) therapy is a modifiable risk factor associated with hemorrhage in patients receiving GPIIb/IIIa receptor antagonists. The Evaluation of c7E3 Fab in Preventing Ischemic Complications of High-Risk Angioplasty (EPIC) trial was a prospective, randomized, placebo-controlled trial examining the efficacy of treatment with abciximab (EPIC Investigators, 1994). A total of 2,099 patients were scheduled for coronary angioplasty or direct atherectomy and were considered to be at high risk for abrupt closure. The primary composite endpoint of the study at 30 days was death from any cause, nonfatal myocardial infarction (MI), coronary artery bypass grafting (CABG) or repeat percutaneous coronary intervention (PCI), or placement of an intraaortic balloon pump to relieve refractory ischemia. All patients received therapy with 325 mg of aspirin and bolus dosing of UFH between 10,000 and 12,000 U followed by additional boluses of 3,000 U every 15 minutes to maintain an activated clotting time (ACT) between 300 and 350 seconds. Patients were randomized to receive either abciximab 0.25 mg/kg as a bolus followed by placebo infusion, or a placebo bolus and infusion. A significant increase in the incidence of major hemorrhage was demonstrated in patients receiving abciximab bolus and infusion compared to placebo bolus and infusion. A total of 14% of patients receiving abciximab bolus and infusion experienced a major bleeding complication as compared to 7% in the placebo bolus and infusion group (p = .001). Analysis of major hemorrhage in patients treated with abciximab bolus and infusion as a function of UFH dose revealed a dose-dependent increased risk.

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"Régions Francophones réels Francophones occasionnels Population Nombre % Nombre % AFRIQUE 30 001 000 4,7 40 617 000 6,3 645 000 000 Afrique du Nord-Est 219 000 0,31 700 000 2 83 400 000 Maghreb 14 455 000 24,7 17 030 000 29 58 400 000 Afrique subsaharienne 13 477 000 3,3 19 745 000 4,8 489 140 000 OCÉAN INDIEN 1 850 000 13,2 2 142 000 15,2 14 060 000 AMÉRIQUE 8 682 000 1,23 565 000 0,5 714 000 000 Amérique du Nord 7 286 000 2,93 2000 000 1,3 247 806 000 Amérique centrale, Caraïbes 1 216 000 0,7 365 000 0,2 176 794 000 Amérique du Sud 180 000 0,06 289 4000 000 ASIE 1 627 000 0,05 810 000 0,03 3 060 000 000 Proche et Moyen-Orient 1 491 000 0,8 800 000 0,4 186 000 000 Extrême-Orient 136 000 0,005 10 000 0,0004 2 874 000 000 EUROPE 63 952 000 8,19 200 000 0,1 789 000 000 Europe de l’Ouest 62 872 000 17,5 5 200 000 1,4 360 000 000 Europe de l’Est et URSS 1 080 000 0,34 000 000 0,9 429 000 000 OCÉANIE 350 000 1,3 33 000 0,1 26 000 000 MONDE 104 612 2 54 225 000 1 5 234 000 000." In Francotheque: A resource for French studies. Routledge, 2014. http://dx.doi.org/10.4324/978020378416-36.

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Conference papers on the topic "350/.001"

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Hagendorf, Ch. "In Situ-STM of Growth, Atomic and Electronic Structure of Thin NiO Films on Ag(001) at Elevated Temperatures (350 – 475 K)." In SCANNING TUNNELING MICROSCOPY/SPECTROSCOPY AND RELATED TECHNIQUES: 12th International Conference STM'03. AIP, 2003. http://dx.doi.org/10.1063/1.1639787.

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Yeo, Hong Goo, Charles Yeager, Xiaokun Ma, et al. "Piezoelectric MEMS Energy Harvesters." In ASME 2014 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/smasis2014-7736.

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The development of self-powered wireless microelectromechanical (MEMS) sensors hinges on the ability to harvest adequate energy from the environment. When solar energy is not available, mechanical energy from ambient vibrations, which are typically low frequency, is of particular interest. Here, higher power levels were approached by better coupling mechanical energy into the harvester, using improved piezoelectric layers, and efficiently extracting energy through the use of low voltage rectifiers. Most of the available research on piezoelectric energy harvesters reports Pb(Zr,Ti)O3 (PZT) or AlN thin films on Si substrates, which are well-utilized for microfabrication. However, to be highly reliable under large vibrations and impacts, flexible passive layers such as metal foil with high fracture strength would be more desirable than brittle Si substrates for MEMS energy harvesting. In addition, metallic substrates readily enable tuning the resonant frequency down by adding proof masses. In order to extract the maximum power from such a device, a high level of (001) film orientation enables an increase in the energy harvesting figures of merit due to the coupling of strong piezoelectricity and low dielectric permittivity. Strongly {001} oriented PZT could be deposited by chemical solution deposition or RF magnetron sputtering and ex situ annealing on (100) oriented LaNiO3 / HfO2 / Ni foils. The comparatively high thermal expansion coefficient of the Ni facilitates development of a strong out-of-plane polarization. 31 mode cantilever beam energy harvesters were fabricated using strongly {001} textured 1∼3 μm thick PZT films on Ni foils with dielectric permittivity of ∼ 350 and low loss tangent (<2%) at 100 Hz. The resonance frequency of the cantilevers (50∼75 Hz) was tuned by changing the beam size and proof mass. A cantilever beam with 3 μm thickness of PZT film and 0.4 g proof mass exhibited a maximum output power of 64.5 μW under 1 g acceleration vibration with a 100 kΩ load resistance after poling at 50 V (EC ∼ 16 V) for 10 min at room temperature. Under 0.3g acceleration, the average power of the device is 9 μW at a resonance frequency of ∼70 Hz. Excellent agreement between the measured and modeled data was obtained using a linear analytical model for an energy harvesting system, using an Euler-Bernoulli beam model. It was also demonstrated that up to an order of magnitude more power could be harvested by more efficiently utilizing the available strain using a parabolic mode shape for the vibrating structure. Additionally, voltage rectifying electronics in the form of ZnO thin film transistors are deposited directly on the cantilever. This relieves the role of voltage rectification from the interfacing circuitry and provides a technique improved harvesting relative to solid state diode rectification because the turn-on bias can be reduced to zero.

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Sahu, Shreehard, Bikash Kumar, Siba Sundar Sahoo, Balila Nagamani Jaya, and Dheepa Srinivasan. "Thermal Stability of Additively Manufactured Mar M 509." In 2022 International Additive Manufacturing Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/iam2022-91410.

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Abstract Co based superalloy Mar M 509 having excellent high temperature oxidation and hot corrosion resistance is studied via the laser powder bed fusion (LPBF) process. The microstructure and mechanical properties of Mar M 509 in the as-printed (AsP) and heat-treated (HT) condition are compared, as a function of two build orientations (longitudinal (L) and transverse (T)), to establish a working range for application of the alloy. The AsP condition has a distinct cellular microstructure (500–600 nm) with 50–60 nm carbide particles decorating the cell boundaries. The L build orientation displays a strong &lt;001&gt; texture, has columnar grains with a grain size of 8–35 μm (along major axis) and a grain aspect ratio of 4, while the T orientation displays a more equiaxed, but bi-modal microstructure with a grain size of 5–28 μm. The room temperature mechanical properties show variability between L and T with T having 15% higher hardness and 34% higher 0.2% yield strength (YS), 30% lower elongation than L. After a short cycle heat treatment at 1250°C, the weld bead structure and cellular boundaries are broken down and there is substantial grain growth in both L (25–33 μm along major axis) and T orientations (5–42 μm), along with coarsening of carbides (250–350 nm). The dislocation density reduces substantially, indicating recrystallisation, and the lattice parameter of the matrix drops significantly, suggesting solute depletion that contributes to precipitate growth and enrichment of the carbides. There is a drop in the yield strength from 860 MPa to 740 MPa in L and from 1150 MPa to 840MPa in T and an increase in ductility from 14% to 23% in L.

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