Journal articles: 'Mchesi'

1

Liu, Tsung Lin, Ben Ran Fu, and Chin Pan. "An Investigation of Heat Transfer on Microchannel Heat Exchanger Flow Arrangement with Gas Heating." Applied Mechanics and Materials 145 (December 2011): 262–66. http://dx.doi.org/10.4028/www.scientific.net/amm.145.262.

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The present study investigates the effect of flow arrangement on heat transfer characteristics in two-phase microchannel heat exchangers (MCHEs) with gas heating. The microchannel heat exchangers are developed to utilize the exhaust heat from a high-temperature gas product of a methanol reformer (a part of a reformed methanol fuel cell). Co-and counter-current flow types of MCHE are tested. Working fluids in the hot and cold sides are helium and liquid methanol, respectively. For both single-phase flow regions, the experimental results indicate that the actual effectiveness of the counter-current MCHE is higher than that of the co-current MCHE. Both of the actual effectiveness of co-and counter-current MCHEs significantly increases with an increase of cold side mass flux. Moreover, the actual effectiveness for both types of MCHE is less relationship to the hot-side thermal power in single-phase zone. The highest actual effectiveness is about 0.6 and 0.72 for co-and counter-current MCHEs, respectively.

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Tang, Daisheng, Meng Li, Carolina Oi Lam Ung, Chengxiang Tang, and Hao Hu. "Exploratory study on development challenges of maternal and child healthcare institutions in China: a qualitative study combining interviews and focus groups." BMJ Open 9, no. 6 (June 2019): e028789. http://dx.doi.org/10.1136/bmjopen-2018-028789.

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ObjectivesTo manage the development of the maternal and child healthcare institution (MCHI) in China, it is important to understand the key challenges and the influencing factors for sustainable development of MCHIs. However, these areas have not been fully investigated previously. This qualitative study aims to systematically explore the perceived development challenges for MCHIs from the perspectives of MCHI staff and government officials.DesignQualitative approaches, including focus group, semistructured interview and documentary analysis, were employed to identify development challenges encountered by the MCHIs in Chengdu city, China.ParticipantsTotally 16 medical staff of MCHIs and officials from local government.MeasuresParticipants’ opinions about the development challenges for MCHI.ResultsThe study revealed the main development challenges for MCHIs included: (1) incapability to provide differentiated medical service (including differentiated maternal and child health maintenance, integrative model of health maintenance and disease treatment, lack of innovation capability); (2) insufficient financial support; (3) shortage of gynaecologists and paediatricians; (4) insufficient facilities and medical equipment; (5) weakness in adopting information technology and (6) constraints of law and regulations.ConclusionsThe study recommends that MCHI should take governance reform to promote healthcare innovation to ensure the sustainable development of MCHI. Public–private partnership needs to be considered for the sustainable development of MCHIs.

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Shankar, Sandeep, and Anil K. Tyagi. "MchAI and MchAII, two class-II restriction endonucleases from Mycobacterium chelonei." Gene 132, no. 1 (September 1993): 119–23. http://dx.doi.org/10.1016/0378-1119(93)90523-6.

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Deng, Daxiang, Guang Pi, Weixun Zhang, Peng Wang, and Ting Fu. "Numerical Study of Double-Layered Microchannel Heat Sinks with Different Cross-Sectional Shapes." Entropy 21, no. 1 (December 25, 2018): 16. http://dx.doi.org/10.3390/e21010016.

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This work numerically studies the thermal and hydraulic performance of double-layered microchannel heat sinks (DL-MCHS) for their application in the cooling of high heat flux microelectronic devices. The superiority of double-layered microchannel heat sinks was assessed by a comparison with a single-layered microchannel heat sink (SL-MCHS) with the same triangular microchannels. Five DL-MCHSs with different cross-sectional shapes—triangular, rectangular, trapezoidal, circular and reentrant Ω-shaped—were explored and compared. The results showed that DL-MCHS decreased wall temperatures and thermal resistance considerably, induced much more uniform wall temperature distribution, and reduced the pressure drop and pumping power in comparison with SL-MCHS. The DL-MCHS with trapezoidal microchannels performed the worst with regard to thermal resistance, pressure drop, and pumping power. The DL-MCHS with rectangular microchannels produced the best overall thermal performance and seemed to be the optimum when thermal performance was the prime concern. Nevertheless, the DL-MCHS with reentrant Ω-shaped microchannels should be selected when pumping power consumption was the most important consideration.

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Auld, M. Elaine, and Kathleen Jahn Schmalz. "Karen Denard Goldman, PhD, MCHES (1949-2014)." Health Education & Behavior 43, no. 2 (March 31, 2016): 226. http://dx.doi.org/10.1177/1090198115621282.

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Xie, Guo-Fu, Lei Zhao, Yuan-Yuan Dong, Yu-Guang Li, Shang-Lin Zhang, and Chen Yang. "Hydraulic and Thermal Performance of Microchannel Heat Sink Inserted with Pin Fins." Micromachines 12, no. 3 (February 28, 2021): 245. http://dx.doi.org/10.3390/mi12030245.

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With the development of micromachining technologies, a wider use of microchannel heat sink (MCHS) is achieved in many fields, especially for cooling electronic chips. A microchannel with a width of 500 μm and a height of 500 μm is investigated through the numerical simulation method. Pin fins are arranged at an inclined angle of 0°, 30°, 45°, and 60°, when arrangement method includes in-lined pattern and staggered pattern. The effects of inclined angle and arrangement method on flow field and temperature field of MCHSs are studied when Reynolds number ranges from 10 to 300. In addition to this, quantitative analyses of hydraulic and thermal performance are also discussed in this work. With the increase of inclined angle, the variation of friction factor and Nusselt number do not follow certain rules. The best thermal performance is achieved in MCHS with in-lined fines at an inclined angle of 30° accompanied with the largest friction factor. Arrangement method of pin fins plays a less significant role compared with inclined angle from a general view, particularly in the Reynolds number range of 100~300.

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Kerr, Dianne, Alexis Blavos, Heidi Hancher-Rauch, Jodi Brookins-Fisher, and Amy Thompson. "CHES, MCHES, and/or CPH? Selecting the Best Credential for You." Health Promotion Practice 20, no. 2 (January 24, 2019): 167–72. http://dx.doi.org/10.1177/1524839918825132.

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The health education profession within the broader context of public health has chosen certification to grant recognition to individuals meeting certain standards, as well as optional accreditation of academic programs. Regarding certification options for health education professionals, those who qualify may sit for the exams to achieve one of the following certifications: Certified Health Education Specialist (CHES), Master Certified Health Education Specialist (MCHES), or Certified in Public Health (CPH). Some health education and other professionals may be familiar with the concept of certification but may not be aware of the value of certification for the profession, their options for certification, or the processes of certification. This article provides information on CHES, MCHES, and CPH certifications and compares and contrasts their requirements. While many professionals may choose one credential over another, others may decide to pursue CHES/MCHES and the CPH. Credentialing continues to be an important part of advancing the health education profession and ensuring that those practicing in the field are highly qualified.

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Dennis, Dixie, James F. McKenzie, and William W. Chen. "The Value of CHES (and now MCHES)?—A Commentary." American Journal of Health Education 43, no. 3 (May 2012): 130–31. http://dx.doi.org/10.1080/19325037.2012.10599228.

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9

Kerr, Dianne L., Emily Van Wasshenova, Rachel Mahas, F. Jeannine Everhart, Amy Thompson, and Debra Boardley. "Advocacy and Public Policy Perceptions and Involvement of Master Certified Health Education Specialists." Health Promotion Practice 18, no. 5 (November 9, 2016): 706–14. http://dx.doi.org/10.1177/1524839916676463.

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Master Certified Health Education Specialists (MCHES; n = 186) participated in a mail survey on advocacy and public policy. Over half of participants reported that they had contacted a public official or provided policy-related information to consumers or other professionals. Participants identified barriers and benefits to influencing public policy. The greatest benefit was identified as improving the health or welfare of the public while the greatest barrier was that they were busy with other priorities. Participants also described their level of involvement, knowledge, training in advocacy, and their self-efficacy in performing various advocacy activities. Most MCHES reported voting and other basic advocacy functions while far fewer had participated in more advanced advocacy activities. Although nearly 73% had formal training on advocacy and policy, only 26% received it through college coursework. Factors predictive of advocacy and policy involvement were determined through a stepwise regression analysis. Five independent variables predicted the total number of advocacy activities and when combined accounted for nearly 61% of the variance. Government-level health educators’ misconception that they cannot participate in advocacy and public policy issues should be dispelled. Health education specialists with the MCHES credential need coursework and additional training on how to effectively influence public health policy.

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Azpiroz, María F., and Magela Laviña. "Involvement of Enterobactin Synthesis Pathway in Production of Microcin H47." Antimicrobial Agents and Chemotherapy 48, no. 4 (April 2004): 1235–41. http://dx.doi.org/10.1128/aac.48.4.1235-1241.2004.

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ABSTRACT Microcin H47 (MccH47) is a gene-encoded peptide antibiotic produced by an Escherichia coli clinical isolate which is active on strains of gram-negative bacteria. Its uptake by E. coli K-12-susceptible cells depends on the presence of any of the outer membrane proteins Cir, Fiu, and FepA, the three catechol receptors of this organism. The nucleotide sequence of a portion of the MccH47 genetic system that had not yet been studied was elucidated. Five open reading frames were identified, three of which corresponded to genes encoding functions related to catechol-type siderophores: mchA and mchS1 are iroB and iroD homologues, respectively, and mchS4 was found to promote the production of the catecholate siderophore enterobactin. The possible relationship between enterobactin synthesis and MccH47 production was studied. Enterobactin-deficient strains failed to produce MccH47 when transformed with the antibiotic genetic determinants and upon introduction of the ent genetic cluster, the production of both the siderophore and MccH47 was restored. Further studies demonstrated that at least the enterobactin nonribosomal peptide synthase EntF is necessary for MccH47 synthesis. The relationship found between MccH47 and catecholate siderophore production is discussed, and a model outlining MccH47 synthesis is proposed.

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GENGINTANI, Fumiaki. "On phung khams skye-mched:." Journal of Indian and Buddhist Studies (Indogaku Bukkyogaku Kenkyu) 57, no. 1 (2008): 456–52. http://dx.doi.org/10.4259/ibk.57.1_456.

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12

Gnanaolivu, Rani, Theodore S. Norvell, and Ramachandran Venkatesan. "Analysis of Inner-Loop Mapping onto Coarse-Grained Reconfigurable Architectures Using Hybrid Particle Swarm Optimization." International Journal of Organizational and Collective Intelligence 2, no. 2 (April 2011): 17–35. http://dx.doi.org/10.4018/joci.2011040102.

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Coarse-Grained Reconfigurable Architectures (CGRAs) have gained currency in recent years due to their abundant parallelism and flexibility. To utilize the parallelism found in CGRAs, this paper proposes a fast and efficient Modulo-Constrained Hybrid Particle Swarm Optimization (MCHPSO) scheduling algorithm to exploit loop-level parallelism in applications. This paper shows that Particle Swarm Optimization (PSO) is capable of software pipelining loops by overlapping placement, scheduling and routing of successive loop iterations and executing them in parallel. The proposed algorithm has been experimentally validated on various DSP benchmarks under two different architecture configurations. These experiments indicate that the proposed MCHPSO algorithm can find schedules with small initiation intervals within a reasonable amount of time. The MCHPSO scheduling algorithm was analyzed with different topologies and Functional Unit (FU) configurations. The authors have tested the parallelizability of the algorithm and found that it exhibits a nearly linear speedup on a multi-core CPU.

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Kosamu, I. B. M., J. Mawenda, and H. W. T. Mapoma. "Water quality changes due to abattoir effluent: A case on Mchesa Stream in Blantyre, Malawi." African Journal of Environmental Science and Technology 5, no. 8 (August 2011): 589–94. http://dx.doi.org/10.5897/ajest11.042.

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Imberti, Jacopo Francesco, Giuseppe Boriani, and Gregory Y. H. Lip. "Updating a simple clinical score predicting incident atrial fibrillation: The CHEST score or more (mCHEST)?" European Journal of Internal Medicine 90 (August 2021): 27–29. http://dx.doi.org/10.1016/j.ejim.2021.06.014.

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Marshall, Ryan S., Deepak K. Gupta, Hannes Leinweber, Juan Aviles, Marcel Nations, and James Sweeney. "Upgraded main ion charge exchange recombination spectroscopy on the C-2W field reversed configuration (FRC) plasma." Review of Scientific Instruments 93, no. 10 (October 1, 2022): 103542. http://dx.doi.org/10.1063/5.0101670.

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A prototype main-ion CHarge Exchange Recombination Spectroscopy (mCHERS) diagnostic is providing measurements of the main-ion (hydrogen or deuterium) temperature and velocity in the C-2W field reversed configuration plasma using charge exchange Balmer-alpha emission at five different radial locations with 500 Hz frequency and a per-pixel velocity resolution of 15 km/s. Measurement along the entire plasma radius of C-2W is enabled by a diagnostic neutral beam (DNB) that passes through the center of plasma, unlike the larger diameter heating neutral beams that have impact parameters of 20 cm. DNB provides high time resolution via beam modulation and spatial resolution via its small cross section. The goals of the current mCHERS upgrade are to double the number of spatial channels, improve the per-pixel velocity resolution by three times, and increase the measurement frequency to match the maximum modulation frequency of the diagnostic neutral beam (∼10 kHz). To accomplish these goals, a new astigmatism-free Isoplane spectrometer has been commissioned. Progress and results from the newly upgraded mCHERS system are detailed.

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Antao, T., and M. A. Beaumont. "Mcheza: a workbench to detect selection using dominant markers." Bioinformatics 27, no. 12 (April 19, 2011): 1717–18. http://dx.doi.org/10.1093/bioinformatics/btr253.

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ANDRIESH, ANDREI M., SERGEI A. MALKOV, and VICTOR I. VERLAN. "Charging and discharging characteristics of MChDS structures †." International Journal of Electronics 77, no. 6 (December 1994): 975–80. http://dx.doi.org/10.1080/00207219408926119.

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Liang, Shaofeng, Yuxuan Qin, Wei Gao, and Muqun Wang. "A lightweight polyurethane-carbon microsphere composite foam for electromagnetic shielding." e-Polymers 22, no. 1 (January 1, 2022): 223–33. http://dx.doi.org/10.1515/epoly-2022-0023.

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Abstract In this study, we have produced a lightweight foam composite material by a simple freeze-drying method, which is composed of carboxylated multi-walled carbon nanotubes (MWCNTs), mesoporous carbon hollow microspheres (MCHMs), water-based polyurethane (WPU), and polyvinyl alcohol (PVA). MCHMs were prepared by a novel and facile method. We found that the electromagnetic shielding performance of foam composites can be adjusted by adjusting the density of foam composites, and the electromagnetic shielding performance of composites can be enhanced through the synergistic effect of hollow mesoporous carbon and MWCNTs. The composite material with a density of 232.8042 mg·cm−3 and 40 wt% MWCNT has a δ of 30.2 S·m−1 and SE of 23 dB. After adding 10 wt% MCHMs to the composite material, δ reaches 33.2 S·m−1, and SE reaches 28 dB. Both absorption losses accounted for 70%. The increase in the content of MWCNT, the increase in density, and the introduction of MCHMs all have a positive effect on the δ and SE of the composite material.

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Algeo, Katie, Ann Epperson, and Matthew Brunt. "Historical GIS as a Platform for Public Memory at Mammoth Cave National Park." International Journal of Applied Geospatial Research 2, no. 4 (October 2011): 19–37. http://dx.doi.org/10.4018/jagr.2011100102.

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The Mammoth Cave Historical GIS (MCHGIS) fosters new understandings of a national park landscape as a historic farming community and offers a web-based platform for public memory of pre-park inhabitants. It maps the 1920 manuscript census at the household level over a streaming topographic map and georeferences Civilian Conservation Corps photographs of dwellings for visualization and analysis of the area’s population on the eve of creation of Mammoth Cave National Park. A web interface to the MCHGIS permits broader dissemination of archival holdings. Public participation GIS techniques are adapted to initiate a virtual site of public memory to supplement the history presented by institutionally-held materials with those donated from private holdings.

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Datta, Arun K., Andi Sumargo, Victoria Jackson, and Pradip P. Dey. "mCHOIS: An Application of Mobile Technology for Childhood Obesity Surveillance." Procedia Computer Science 5 (2011): 653–60. http://dx.doi.org/10.1016/j.procs.2011.07.085.

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Eneren, Pinar, Yunus Tansu Aksoy, and Maria Rosaria Vetrano. "Experiments on Single-Phase Nanofluid Heat Transfer Mechanisms in Microchannel Heat Sinks: A Review." Energies 15, no. 7 (March 30, 2022): 2525. http://dx.doi.org/10.3390/en15072525.

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For more than 20 years, the use of nanofluids to enhance heat transfer in microchannel heat sinks (MCHSs) has been the subject of a large number of scientific articles. Despite the great potentialities reported in several works, the presence of controversial results and the lack of understanding of heat transfer enhancement mechanisms prevent further advancement in the use of nanofluids as coolants. This article reviews the scientific literature focused on several aspects of nanofluids that have a role in the heat transfer enhancement within the MCHSs: nanofluid stability, thermal conductivity, and particle clustering, as well as the particle–surface interactions, i.e., abrasion, erosion, and corrosion. We also include the most relevant works on the convective heat transfer and MCHSs operated with nanofluids in our review.

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Zess, James Allen, and Martin Dressler. "Significant Benefits of 3D Screen Printing for Manufacturing Micro-Channel Heat Exchangers." Materials Science Forum 941 (December 2018): 2148–53. http://dx.doi.org/10.4028/www.scientific.net/msf.941.2148.

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Micro-channel heat exchangers (MCHXs) manufactured by Zess & Lin Industries provide highly effective heat transfer and are used in a growing number of critical applications. MCHXs consist of stainless steel or high temperature Nickel-based alloy plates with micro channels that are chemically etched or machined into each plate. These traditional extractive manufacturing methods of chemical etching and machining used in manufacturing MCHX plates are difficult and costly as a large percentage of expensive alloy is lost during manufacturing.

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Mendelsohn, Morris A., Francis W. Navish, and Dongsik Kim. "Characteristics of a Series of Energy-Absorbing Polyurethane Elastomers." Rubber Chemistry and Technology 58, no. 5 (November 1, 1985): 997–1013. http://dx.doi.org/10.5254/1.3536110.

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Abstract Compositional effects were measured on a series of polyurethanes prepared by extending MDI-terminated PTMG prepolymers with dihydric alcohols and MCHDI-terminated prepolymers with diamines. The tensile and compressive stiffness and hysteretic loss increased while the resilience decreased with a decrease in the isocyanate equivalent weight of the prepolymer. Polyol chain extenders having an aromatic structure provided greater rigidity and increase in temperature on compressive cycling than did their aliphatic counterparts. Structural linearity and symmetry of both the aliphatic and aromatic extenders promoted greater rigidity and resiliency and less damping. Although direct replacement of MDI with MCHDI gives softer polyurethanes, use of the aromatic diamine extenders with the MCHDI-terminated prepolymers gave materials displaying the least resilience and greatest rigidity under static test conditions and the highest increase in temperature on compressive cycling. However, a significant increase in the chain length of the aromatic diamine-extended prepolymer provided properties quite similar to those obtained with the aliphatic diol systems.

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Japar, Wan Mohd Arif Aziz, Nor Azwadi Che Sidik, Rahman Saidur, Yutaka Asako, and Siti Nurul Akmal Yusof. "A review of passive methods in microchannel heat sink application through advanced geometric structure and nanofluids: Current advancements and challenges." Nanotechnology Reviews 9, no. 1 (December 8, 2020): 1192–216. http://dx.doi.org/10.1515/ntrev-2020-0094.

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AbstractMicrochannel heat sink (MCHS) is an advanced cooling technique to fulfil the cooling demand for electronic devices installed with high-power integrated circuit packages (microchips). Various microchannel designs have been innovated to improve the heat transfer performance in an MCHS. Specifically, the utilisation of nanotechnology in the form of nanofluid in an MCHS attracted the attention of researchers because of considerable enhancement of thermal conductivity in nanofluid even at a low nanoparticle concentration. However, a high-pressure drop was the main limitation as it controls the MCHS performance resulted from heat transfer augmentation. Therefore, this study aimed to critically summarise the challenges and limitations of both single and hybrid passive methods of MCHS. Furthermore, the performance of nanofluid as a coolant in the MCHS as affected by the type and concentration of nanoparticle and the type of base fluid was reviewed systematically. The review indicated that the hybrid MCHS provides a better cooling performance than MCHS with the single passive method as the former results in a higher heat transfer rate with minimal pressure drop penalty. Besides that, further heat transfer performance can be enhanced by dispersing aluminium dioxide (Al2O3) nanoparticles with a concentration of less than 2.0% (v/v) in the water-based coolant.

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Buist, Anne, Jeannette Milgrom, Carol Morse, Sarah Durkin, and Colleen Rolls. "Integrating Services in the Recognition and Management of Postpartum Depression." Australian Journal of Primary Health 6, no. 4 (2000): 74. http://dx.doi.org/10.1071/py00037.

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Our study, completed in 1999, linking a mother-baby unit with Maternal and Child Health Nurses (MCHNs) with education, liaison and prioritised tertiary assessment and admission is presented, and issues of service delivery and satisfaction are highlighted. Two hundred and forty three women were recruited antenatally and followed to up to nine months postpartum, 133 forming the study group and 110 the control. MCHNs in the study group were offered an intensive education package, with ongoing six weekly liaison meetings. The intervention was welcomed and feedback positive. Women in the study and control group did not differ in their levels of depression throughout the study. Differences, however, in adjustment to motherhood emerged between women in well-supported affluent areas and those in under-resourced lower socioeconomic areas. MCHNs were seen by women in all areas as the key people to turn to. Those in the lower socioeconomic areas reported greater difficulties in providing a service, and women in these areas were less likely to access services external to their region. Implications for the development of further services and the linking of these supports are discussed.

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Qin, Yuxuan, Muqun Wang, Wei Gao, and Shaofeng Liang. "Rationally designed structure of mesoporous carbon hollow microspheres to acquire excellent microwave absorption performance." RSC Advances 11, no. 24 (2021): 14787–95. http://dx.doi.org/10.1039/d1ra00465d.

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27

Francis, B. "Mr. Stephen J. Bell, MChS." British Journal of Sports Medicine 19, no. 3 (September 1, 1985): 144. http://dx.doi.org/10.1136/bjsm.19.3.144.

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Kumari, Nikita, Tabish Alam, Masood Ashraf Ali, Anil Singh Yadav, Naveen Kumar Gupta, Md Irfanul Haque Siddiqui, Dan Dobrotă, Ionela Magdalena Rotaru, and Abhishek Sharma. "A Numerical Investigation on Hydrothermal Performance of Micro Channel Heat Sink with Periodic Spatial Modification on Sidewalls." Micromachines 13, no. 11 (November 16, 2022): 1986. http://dx.doi.org/10.3390/mi13111986.

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Electronic gadgets have been designed to incorporating very small components such as microcontrollers, electronic chips, transistors, microprocessors, etc. These components are exceptionally heat sensitive and can be wrecked if heat is not released. As a result, the thermal control of such components is critical to their optimum performance and extended life. The use of a microchannel heat sink (MCHS) has shown promising solutions to remove the excess heat. In this paper, we have proposed a novel design of MCHS and investigated it numerically. Four different surface modifications on the sidewall of the passage, namely, extended triangular surface (ETS), extended circular surface (ECS), triangular groove surface (TGS), and the circular groove surface (CGS) in the passage of the microchannel have been exploited in the Reynolds number of 100–900. In the presence of geometrical modification, the cooling capacities have been enhanced. The results show that the Nusselt numbers of ETS-MCHS, ECS-MCHS, TGS-MCHS, and CGS-MCHS are increased by 4.30, 3.61, 1.62, and 1.41 times in comparison to the Nusselt number of MCHS with smooth passage, while the friction factor values are increased by 7.33, 6.03, 2.74, and 1.68 times, respectively. In addition, the thermohydraulic performance parameter (THPP) has been evaluated and discussed. The fact that MCHS have THPP values greater than unity demonstrates that the passage’s geometries are a practical means of achieving effective thermal management.

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Usman, Muhammad R., David L. Cresswell, and Arthur A. Garforth. "Selectivity of the Formation of the Ring-Closed Products and Methylcyclohexenes in the Dehydrogenation of Methylcyclohexane to Toluene." ISRN Chemical Engineering 2012 (July 10, 2012): 1–7. http://dx.doi.org/10.5402/2012/818953.

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In our previous publication (Usman et al., 2011), the by-products formation during the dehydrogenation of methylcyclohexane over 1.0 wt% Pt/γ-Al2O3 was studied under wide range of operating conditions. The formation and yield patterns of benzene, cyclohexane, and isomers of xylene were studied. In the present contribution, the formation and yield patterns of the ring-closed products (sum of ethylcyclopentane and dimethylcyclopentanes) and methylcyclohexenes are studied. The yields of both of the ring-closed products (RCPs) and methylcyclohexenes (MCHes) were observed to increase with an increase in pressure. However, the effect of hydrogen concentration was found affecting differently at the low and at the high pressures. The yield patterns of methylcyclohexenes suggested methylcyclohexenes as the reaction intermediate in the formation of toluene.

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Nuzzo, Carmen, Vincenzo Anelli, Silvia Carpano, Angela Torsello, Domenico Sergi, Renato Covello, Carmine Zoccali, et al. "Tumor response assessment in locally unresectable or metastatic soft tissue sarcoma (aSTS) patients (pts): A three-year Regina Elena Cancer Institute (IRE) experience with trabectedin therapy." Journal of Clinical Oncology 31, no. 15_suppl (May 20, 2013): e21517-e21517. http://dx.doi.org/10.1200/jco.2013.31.15_suppl.e21517.

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e21517 Background: Trabectedin has emerged as an effective agent for aSTS pts pretreated with anthracyclines and ifosfamide. Recent data suggest that RECIST criteria could underestimate tumor response. Methods: ASTS pts who received trabectedin as 2nd or further line of treatment were retrospectively reviewed. Tumor response was assessed using RECIST, mChoi and MASS criteria. A good response according to mChoi Criteria was defined as ≥ 10% mean decrease in tumor size or a ≥ 15% decrease in tumor attenuation on contrast-enhanced CT images. Predominantly solid enhancing target lesions were evaluated for marked central necrosis or marked decreased attenuation on axial contrast-enhanced CT images by MASS Criteria. Results: From May 2009 to December 2012, 30 pts with aSTS received trabectedin; pts characteristics are summarized in the table. Median number of previous treatment lines was 2 (range 1-5); median number of cycles administered was 4 (range 1–22 cycles). Treatment was well tolerated; main causes of dose-reduction were hematological and liver toxicities. Median progression free survival (PFS) was 8 wks (95% CI: 2-14); median overall survival (OS) was 44 wks (95% CI: 18-94). According to RECIST, 4 pts (15.4%)obtained a partial response (PR)), 9 pts (34.6%) achieved a stable disease (SD); tumor control rate was 50%. 13 pts (43%) obtained a progression of disease (PD). CT Scans of 13 pts were available for comparison of different response assessment methods (2 RP, 5 SD, and 6 PD). In our small series of pts concordance between the three radiologic methods tested was 90%. Conclusions: In aSTS patients treated with trabectedin, there is substantial concordance between mChoi, MASS and RECIST criteria. Prospective validation of the potential role of mChoi and MASS criteria in this setting is warranted. [Table: see text]

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Skouteris, Helen, Angela Melder, Cate Bailey, Heather Morris, Rhonda Garad, Helena Teede, and Tracy Robinson. "Application of Monash Centre for Health Research and Implementation Framework to the Development of Polycycstic Ovary Syndrome Guideline: A Case Study on Implementation." Seminars in Reproductive Medicine 36, no. 01 (January 2018): 013–18. http://dx.doi.org/10.1055/s-0038-1667311.

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AbstractImplementation of healthcare guidelines, a set of recommendations aiming to optimize patient care, can be a complex process which is at risk of poor translation into practice. Failure to adopt new evidence-based healthcare findings can contribute to a large variation in care, potentially affecting outcomes for service users. Designed to avoid this issue, the Monash Centre for Health Research and Implementation (MCHRI) knowledge translation framework was created to support the development and future implementation of clinical practice guidelines. The framework is distinguished by a focus on methodological rigor, stakeholder engagement, and partnership, leading to the coproduction of a guideline and research projects. In this article, we use the development of the International Evidence-based Guideline on the Assessment and Management of Polycystic Ovarian Syndrome (2018) as a case study to articulate the MCHRI knowledge translation framework. Specifically, this article discusses stakeholder engagement; development and codesign of evidence-based recommendations; implementation and knowledge generation; dissemination, translation, and scale up; and refinement/learning from evaluation. This case study demonstrates how hybrid frameworks, models, and theories for implementation, such as the MCHRI implementation framework, have their place in healthcare. The underlying principle that informs the framework is stakeholder engagement, including codesign, empowerment, and partnership.

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Wang, Yuwei, Jie Yu, Cong Qi, and Wenjie Zhang. "Review on Coupled Thermo-Hydraulic Performance of Nanofluids and Microchannels." Nanomaterials 12, no. 22 (November 11, 2022): 3979. http://dx.doi.org/10.3390/nano12223979.

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As electronic components continue to be miniaturized, the heat flux density continues to increase. Scholars have proposed the use of microchannel heat sinks (MCHS) to dissipate heat from devices with high heat flux density, and have pointed out that the heat dissipation capability of MCHS can be improved in two ways: using nanofluids with high thermal conductivity and optimizing the structure of MCHS. In this paper, the thermophysical parameters and thermo-hydraulic performance of nanofluids in microchannels are reviewed. Improving the heat dissipation of MCHS is analyzed and discussed in terms of both thermal properties and flow properties, respectively.

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Shen, Jienan, Xiuxiu Li, Yongsheng Zhu, Boya Zhang, Hang Guo, Baolin Liu, and Hong Chen. "A Three-Dimensional Simulation Analysis of Fluid Flow and Heat Transfer in Microchannel Heat Sinks with Different Structures." Journal of Non-Equilibrium Thermodynamics 46, no. 3 (March 25, 2021): 235–53. http://dx.doi.org/10.1515/jnet-2020-0099.

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Abstract Numerical studies have been performed to analyze the fluid flow and heat transfer characteristics of nine microchannel heat sinks (MCHS) with different shapes and different arrangements of the ribs and cavities on the sidewalls, using three common shapes (square, triangle, and circular) of ribs or cavities as the basic structure in this work. The boundary conditions, governing equations, friction factor (f), Nusselt number (Nu), and performance evaluation criteria (ξ) were considered to determine which design was the best in terms of the heat transfer, the pressure drop, and the overall performance. It was observed that no matter how the circular ribs or cavities were arranged, its heat sink performance was better than the other two shapes for Reynolds number of 200–1000. Therefore, circular ribs or cavities can be considered as the best structure to improve the performance of MCHS. In addition, the heat sink performance of the microchannel heat sink with symmetrical circular ribs (MCHS-SCR) was improved by 31.2 % compared with the conventional microchannel heat sink at Re = 667. This was because in addition to the formation of transverse vortices in the channel, four symmetrical and reverse longitudinal vortices are formed to improve the mixing efficiency of the central fluid (low temperature) and the near-wall fluid (high temperature). Then, as the Reynolds number increases, the heat sink performance of MCHS-SCR dropped sharply. The heat sink performance of microchannel heat sinks with staggered ribs and cavities (MCHS-SCRC, MCHS-STRC, and MCHS-SSRC) exceeded that of MCHS-SCR. This indicated that the microchannel heat sink with staggered ribs and cavities was more suitable for high Reynolds number (Re > 800).

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Kim, Richard W., and Vinayak K. Nahar. "A Guide for Understanding Health Education and Promotion Programs." Health Promotion Practice 19, no. 2 (November 13, 2017): 167–69. http://dx.doi.org/10.1177/1524839917741487.

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Planning, Implementing & Evaluating Health Promotion Programs: A Primer is a versatile and comprehensive resource on the theoretical and practical underpinnings of successful health promotion programs. The requirements for effective health promotion program development are presented with frequent use of practical planning examples, pedagogical devices, and expert rationale. Ideal for undergraduate and graduate students in health education, promotion, and planning courses, this 15-chapter textbook is organized in a manner that specifically addresses the responsibilities and competencies required of health education specialists as published in the Health Education Specialist Practice Analysis of 2015. The authors of this textbook are leaders in the field and provide readers with the skills necessary to carry out the full process of health promotion program execution, while also offering direct preparation for CHES and MCHES licensing exams.

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Muhammad Zeb, Muhammad Ilyas, Shahira Shahid, Komal Naeem, Urooj Fatima, Abdul Momin Kazi, Fyezah Jehan, Yasir Shafiq, et al. "Profile: Maternal and Child Health Surveillance System in peri-urban areas of Karachi, Pakistan." Gates Open Research 2 (December 8, 2022): 2. http://dx.doi.org/10.12688/gatesopenres.12788.2.

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A Maternal and Child Health Surveillance System (MCHSS) was set up by the department of pediatrics and child health, Aga Khan University, Pakistan in peri-urban areas of Karachi to provide a platform for various research projects. It was established in five low-socioeconomic communities in a stepwise manner between 2003 and 2014. The total area currently under surveillance is 18.6 km2 covering a population of 302,944. We maintain a record of all births, deaths, pregnancies, and migration events by two monthly household visits. Verbal autopsies for stillbirths, deaths of children under the age of five years and adult female deaths are also conducted. For over a decade, the MCHSS has been a platform for a variety of studies describing the burden of various infectious diseases like typhoid, pneumonia and diarrhea, evaluation of effectiveness of various treatment regimens for neonatal sepsis, assessment of the acceptance of hospitalized care, determination of the etiology of moderate to severe diarrhea, assessment of burden and etiology of neonatal sepsis and a multi-center cohort study measuring the burden of stillbirths, neonatal and maternal deaths. More recently we have also established a bio-repository of the well-characterized maternal and newborn cohort. Through a well-established MCHSS, we aim to provide concrete evidence base to guide policy makers to make informed decisions at local, national, and international levels.

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Gao, Yiwei, Junchao Wang, Mingxuan Cao, Luhao Zang, Hao Liu, Matthew M. F. Yuen, Xiaolei Bai, and Ying Wang. "The Effect of Geometric Parameters on Flow and Heat Transfer Characteristics of a Double-Layer Microchannel Heat Sink for High-Power Diode Laser." Micromachines 13, no. 12 (November 25, 2022): 2072. http://dx.doi.org/10.3390/mi13122072.

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The effect of the geometric parameters on the flow and heat transfer characteristics of a double-layer U-shape microchannel heat sink (DL-MCHS) for a high-power diode laser was investigated in this work. FLUENT 19.2 based on the finite volume method was employed to analyze the flow and heat transfer performance of DL-MCHS. A single variable approach was used to fully research the impact of different parameters (the number of channels, the channel cross-sectional shape, and the aspect ratio) on the temperature distribution, pressure drop, and thermal resistance of the DL-MCHS. The rectangular DL-MCHS heat transfer performance and pressure drop significantly increased with the rise in the channel’s aspect ratio due to there being a larger wet perimeter and convective heat transfer area. By comparing the thermal resistance of the DL-MCHS at the same power consumption, it was found that the rectangular DL-MCHS with an aspect ratio in the range of 5.1180–6.389 had the best overall performance. With the same cross-sectional area and hydraulic diameter (AC = 0.36 mm, Dh = 0.417 mm), the thermal resistance of the trapezoidal microchannel heat sink was 32.14% and 42.42% lower than that of the triangular and rectangular ones, respectively, under the condition that the pumping power (Wpp) was 0.2 W. Additionally, the thermal resistance was reduced with the increment of the number of channels inside the DL-MCHS, but this would induce an increased pressure drop. Thus, the channel number has an optimal range, which is between 50 and 80 for the heat sinks in this study. Our study served as a simulation foundation for the semiconductor laser double-layer U-shaped MCHS optimization method using geometric parameters.

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Yang, Chao-Lung, Chi-Hao Chien, Yen-Ping Lin, and Chi-Hsun Chien. "Tone Curve Compensation of Multiple Color Halftoning Screen Printing for Heterogeneous Fabrics." Journal of Imaging Science and Technology 64, no. 5 (September 1, 2020): 50406–1. http://dx.doi.org/10.2352/j.imagingsci.technol.2020.64.5.050406.

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Abstract For mass production, multiple color halftoning screen printing (MCHSP) can be considered as the alternative textile printing technology when vivid color gradation is needed and the cost of digital printing is a concern. Essentially, MCHSP utilizes the same equipment as traditional screen printing to print overlapping multiple color gradation under halftoning patterns by applying dedicated treatments on color separation and calibration. To ensure color quality, equipment calibration and tone curve compensation are required to compensate for the variables arising from equipment setup and heterogeneous fabrics. In this research, the authors present a procedure of tone curve compensation to eliminate the discrepancy from heterogeneous fabrics. The experimental results based on 55 samples of 44 different fabrics show the effectiveness of compensation and reveal the distribution of average compensation percentage across fabrics.

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Byrd, Larry, Michael P. Camden, Gene E. Maddux, and Larry W. Simmons. "Random Amplitude Fatigue Life of Electroformed Nickel Micro-Channel Heat Exchanger Coupons." Shock and Vibration 5, no. 2 (1998): 103–10. http://dx.doi.org/10.1155/1998/484108.

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The use of micro-channel heat exchangers (MCHEX) with coolant flow passage diameters less than 1 mm has been proposed for heat flux, weight, or volume limited environments. This paper presents room temperature, random amplitude,ε−N(strain versus number of cycles to failure) curves for MCHEX coupons formed by electroplating nickel on a suitable form. These coupons are unique in two aspects; the microstructure formed by electroplating and the presence of holes as an integral part of the structure. The hole diameters range from approximately 10% to 50% to the specimen thickness. The fatigue life of electroformed nickel can be estimated from constant amplitude data using the formulation presented. The heat exchangers with channels parallel to the coupon direction have a lower fatigue life than the solid material.

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Kumar Singh, Rakesh, Saurabh Varshney, Sampan Singh Bist, Meena Harsh, and Nitin Gupta. "Mesenchymal Chondrosarcoma of the Mandible: A Rare Malignant Tumor." Ear, Nose & Throat Journal 93, no. 9 (September 2014): E18—E19. http://dx.doi.org/10.1177/014556131409300904.

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Mesenchymal chondrosarcoma (MCHS) is a highly aggressive, malignant, cartilaginous tumor that represents about 1% of all chondrosarcomas. Only about 50 cases of MCHS of the jaw have been reported in the English-language literature; maxillary tumors are much more common than mandibular tumors. We present a new case of MCHS of the mandible that arose in a 22-year-old woman whose initial two biopsies did not reveal the features of the tumor. The diagnosis was made only after an incisional biopsy.

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Heuson, Egon, Renato Froidevaux, Ivaldo Itabaiana, Robert Wojcieszak, Mickaël Capron, and Franck Dumeignil. "Optimisation of catalysts coupling in multi-catalytic hybrid materials: perspectives for the next revolution in catalysis." Green Chemistry 23, no. 5 (2021): 1942–54. http://dx.doi.org/10.1039/d0gc04172f.

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From the fusion of bio- and chemocatalysts, immobilized in innovative materials, a new family of catalysts is emerging: multi-catalytic hybrid materials (MCHMs). It offers atom and energy savings and, above all, new prospects in chemical synthesis.

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Apte, A. S., and G. Marcou. "SEICHE IN PORTS." Coastal Engineering Proceedings 1, no. 5 (January 29, 2011): 8. http://dx.doi.org/10.9753/icce.v5.8.

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In his thesis Prof. John S. McHewn has given an account of experiments on seiche in port models. Though the fundamental causes of seiche in harbours and ports are more or less known, we have little knowledge of the harbour dimensions for which a particular seiche is likely to occur. A systematic study was therefore initiated by Prof. McNown and our work described in this paper may be considered as its continuation.

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Kumar, Naresh, and Ritu Rani. "Quality of maternal and child health: fresh evidence from India." International Journal of Human Rights in Healthcare 12, no. 4 (August 29, 2019): 299–314. http://dx.doi.org/10.1108/ijhrh-01-2019-0010.

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Purpose The purpose of this paper is to examine the regional variations in maternal and child health all over India. The Maternal and Child Health Index (MCHI) is constructed to find the extent of variations in maternal and child health status for the States and Union Territories (UTs) of India. Design/methodology/approach The Wroclow taxonomic technique was used to construct the MCHI for the States and UTs of India. In all, 29 variables were selected for the construction of MCHI. All the variables were taken from National Family Health Survey-4 (NFHS, 2017) of India. Findings The findings suggest that there are wide variations in MCHI all over India. In India, Kerala topped in terms of MCHI followed by Jammu & Kashmir. Nagaland is on the bottom of the list followed by Bihar and Uttar Pradesh. High values of MCHI (> 0.4) are posing a serious concern for all States/UTs in India. Social implications The existence of inequality in MCHI for India is truly posing a serious inquiry regarding the healthcare system in India. The outcome of the study demands that time has come to adopt a human rights approach to the right to health in India. The findings of the study could be used by the health policy makers in India. Originality/value This study shows the existence of wide variations in the quality of maternal and child health all over India. The quantification of the quality of maternal and child health is needed to improve the health of the population in India. Little research has been done on the issue of quality of maternal and child health in India. This study is an important contribution to the current knowledge of quality of maternal and child health in India.

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Wang, Ruijin, Jiawei Wang, and Weijia Yuan. "Analysis and Optimization of a Microchannel Heat Sink with V-Ribs Using Nanofluids for Micro Solar Cells." Micromachines 10, no. 9 (September 17, 2019): 620. http://dx.doi.org/10.3390/mi10090620.

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It is crucial to control the temperature of solar cells for enhancing efficiency with the increasing power intensity of multiple photovoltaic systems. In order to improve the heat transfer efficiency, a microchannel heat sink (MCHS) with V-ribs using a water-based nanofluid as a coolant for micro solar cells was designed. Numerical simulations were carried out to investigate the flows and heat transfers in the MCHS when the Reynolds number ranges from 200 to 1000. The numerical results showed that the periodically arranged V-ribs can interrupt the thermal boundary, induce chaotic convection, increase heat transfer area, and subsequently improve the heat transfer performance of a MCHS. In addition, the preferential values of the geometric parameters of V-ribs and the physical parameters of the nanofluid were obtained on the basis of the Nusselt numbers at identical pump power. For MCHS with V-ribs on both the top and bottom wall, preferential values of V-rib are rib width d / W = 1 , flare angle α = 75 ° , rib height h r / H = 0.3 , and ratio of two slant sides b / a = 0.75 , respectively. This can provide sound foundations for the design of a MCHS in micro solar cells.

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Lu, Kaijie, Chunju Wang, Changrui Wang, Xueliang Fan, Fei Qi, and Haidong He. "Topological structures for microchannel heat sink applications – a review." Manufacturing Review 10 (2023): 2. http://dx.doi.org/10.1051/mfreview/2022035.

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The microchannel heat sink (MCHS) has the advantages of small heat transfer resistance, high heat transfer efficiency and small size, which exhibits good heat transfer performance in the field of active heat dissipation of electronic devices integrated with high heat flux density. In this paper, the application of MCHS in thermal management is reviewed in recent years, and the research progress of microchannel topology on enhancing heat transfer performance is summarized. Firstly, the research progress on the cross-sectional shape of the microchannel shows that the heat transfer area and fluid flow dead zone of the microchannel is the keys to affecting the heat transfer performance; Secondly, the microchannel distribution and the bionic microchannel structure have a great role in enhancing heat transfer performance, especially in microchannel temperature uniformity; Thirdly, the disturbing effect caused by interrupted structures in microchannels such as ribs and concave cavities has become a hot topic of research because it can weaken the thermal boundary layer and increase heat dissipation. Finally, the commonly used MCHS materials and cooling media are summarized and introduced. Based on the above reviews of MCHS research and applications, the future trends of MCHS topologies are presented.

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Pozzolini, Marina, Enrico Millo, Caterina Oliveri, Serena Mirata, Annalisa Salis, Gianluca Damonte, Maria Arkel, and Sonia Scarfì. "Elicited ROS Scavenging Activity, Photoprotective, and Wound-Healing Properties of Collagen-Derived Peptides from the Marine Sponge Chondrosia reniformis." Marine Drugs 16, no. 12 (November 23, 2018): 465. http://dx.doi.org/10.3390/md16120465.

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Recently, the bioactive properties of marine collagen and marine collagen hydrolysates have been demonstrated. Although there is some literature assessing the general chemical features and biocompatibility of collagen extracts from marine sponges, no data are available on the biological effects of sponge collagen hydrolysates for biomedical and/or cosmetic purposes. Here, we studied the in vitro toxicity, antioxidant, wound-healing, and photoprotective properties of four HPLC-purified fractions of trypsin-digested collagen extracts—marine collagen hydrolysates (MCHs)—from the marine sponge C. reniformis. The results showed that the four MCHs have no degree of toxicity on the cell lines analyzed; conversely, they were able to stimulate cell growth. They showed a significant antioxidant activity both in cell-free assays as well as in H2O2 or quartz-stimulated macrophages, going from 23% to 60% of reactive oxygen species (ROS) scavenging activity for the four MCHs. Finally, an in vitro wound-healing test was performed with fibroblasts and keratinocytes, and the survival of both cells was evaluated after UV radiation. In both experiments, MCHs showed significant results, increasing the proliferation speed and protecting from UV-induced cell death. Overall, these data open the way to the use of C. reniformis MCHs in drug and cosmetic formulations for damaged or photoaged skin repair.

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Zhao, Yunyan, Qianyu Zhuang, Wenda Li, Hongrui Peng, Guicun Li, and Zhonghua Zhang. "Encapsulation of Few-Layer MoS2 in the Pores of Mesoporous Carbon Hollow Spheres for Lithium-Sulfur Batteries." Nanomaterials 9, no. 9 (September 3, 2019): 1247. http://dx.doi.org/10.3390/nano9091247.

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Integrating a highly conductive carbon host and polar inorganic compounds has been widely reported to improve the electrochemical performances for promising low-cost lithium sulfur batteries. Herein, a MoS2/mesoporous carbon hollow sphere (MoS2/MCHS) structure has been proposed as an efficient sulfur cathode via a simple wet impregnation method and gas phase vulcanization method. Multi-fold structural merits have been demonstrated for the MoS2/MCHS structures. On one hand, the mesoporous carbon hollow sphere (MCHS) matrix, with abundant pore structures and high specific surface areas, could load a large amount of sulfur, improve the electronical conductivity of sulfur electrodes, and suppress the volume changes during the repeated sulfur conversion processes. On the other hand, ultrathin multi-layer MoS2 nanosheets are revealed to be uniformly distributed in the mesoporous carbon hollow spheres, enhancing the physical adsorption and chemical entrapment functionalities towards the soluble polysulfide species. Having benefited from these structural advantages, the sulfur-impregnated MoS2/MCHS cathode presents remarkably improved electrochemical performances in terms of lower voltage polarization, higher reversible capacity (1094.3 mAh g−1), higher rate capability (590.2 mAh g−1 at 2 C), and better cycling stability (556 mAh g−1 after 400 cycles at 2 C) compared to the sulfur-impregnated MCHS cathode. This work offers a novel delicate design strategy for functional materials to achieve high performance lithium sulfur batteries.

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Kim, Seulgi, Tri Duc Ngo, Kyeong Kyu Kim, and T. Doohun Kim. "Characterization, crystallization and preliminary X-ray diffraction analysis of an (S)-specific esterase (pfEstA) fromPseudomonas fluorescensKCTC 1767: enantioselectivity for potential industrial applications." Acta Crystallographica Section F Structural Biology and Crystallization Communications 68, no. 11 (October 30, 2012): 1374–77. http://dx.doi.org/10.1107/s1744309112040626.

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The structures and reaction mechanisms of enantioselective hydrolases, which can be used in industrial applications such as biotransformations, are largely unknown. Here, the X-ray crystallographic study of a novel (S)-specific esterase (pfEstA) fromPseudomonas fluorescensKCTC 1767, which can be used in the production of (S)-ketoprofen, is described. Multiple sequence alignments with other hydrolases revealed thatpfEstA contains a conserved Ser67 within the S-X-X-K motif as well as a highly conserved Tyr156. Recombinant protein containing an N-terminal His tag was expressed inEscherichia coli, purified to homogeneity and characterized using SDS–PAGE, MALDI-TOF MS and enantioselective analysis.pfEstA was crystallized using a solution consisting of 1 Msodium citrate, 0.1 MCHES pH 9.5, and X-ray diffraction data were collected to a resolution of 1.9 Å with anRmergeof 7.9%. The crystals ofpfEstA belonged to space groupP212121, with unit-cell parametersa= 65.31,b= 82.13,c = 100.41 Å, α = β = γ = 90°.

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Spiric, Zeljko, and Radomir Samardzic. "Comorbidity of posttraumatic stress disorder and mild closed head injury in war veterans: Endocrinological and psychological profiles." Vojnosanitetski pregled 62, no. 1 (2005): 17–25. http://dx.doi.org/10.2298/vsp0501017s.

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Aim. To determine the degree of psychological and endocrinological changes in war veterans with the diagnosis of Chronic Posttraumatic Stress Disorder (PTSD) regarding presence/absence of comorbid mild closed head injury (mCHI) caused by explosive devices. Methods. Two groups of PTSD inpatients, with (n = 37), and without (n = 86) sustained blast trauma followed by mCHI were formed during the psychiatric treatment. Participants were interviewed by experienced clinicians who used the PTSD Interview (PTSD-I). In addition, patients completed the Symptom Checklist-90-Revised (SCL-90-R). Serum levels of ten hormones were assessed: triiodothyronine, thyroxine, thyrotropin-stimulating hormone, prolactin, luteinizing hormone, follicle-stimulating hormone, and insulin, by radioimmunoassays and hydrocortisone, growth hormone and testosterone by fluoroimmunoassays. Results. Veterans with comorbid mCHI and PTSD showed significantly higher level of amnesia for traumatic event as well as of somatization on the SCL-90-R. Significant differences of hormone levels were not found. Conclusion. The results didn't support the hypothesis on specific PTSD subgroup characterized by history of mCHI and consecutive postconcussion syndrome. The absence of differences in levels of hormones indicated the dominant role of psychogenic trauma in the etiology of hormone disbalance in chronic PTSD. Amnesia for traumatic event in war veterans with comorbid PTSD and mCHI was easily explained by neurogenic peritraumatic amnesia due to the blast trauma, but it did not affect either quality of intensity or posttraumatic symptoms as well as endocrinological parameters.

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Zainal Abidin, Mohd Zaki, Usama Mohamed Nour, and Ku Zilati Ku Shaari. "Effect of Varying Mixed Refrigerant Composition on Main Cryogenic Heat Exchanger Performance." Key Engineering Materials 594-595 (December 2013): 13–17. http://dx.doi.org/10.4028/www.scientific.net/kem.594-595.13.

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LNG plant requires a lot of energy for its production especially in liquefaction process. One of the reasons is due to inefficiency on some of its major equipments, particularly on Main Cryogenic Heat Exchanger (MCHE). The efficiency of this unit can be improved by the usage of Mixed Refrigerant (MR) which matches closely the heating curve between hot and cold stream. However, the study on this refrigerant is complex and tedious due to multi component refrigerant and phase changing process inside MCHE. In this study, effect of varying MR composition towards MCHE performance is analyzed, with focus on heat transfer coefficient in shell side of MCHE. The analysis was based on single and two phase flow conditions which are gas flow and liquid falling film flow. The adjustment of binary components in MR composition was studied for each flow regime. By doing this, the best composition adjustment that gives the highest value of heat transfer coefficient was determined. It was found that the adjustment of methane-propane (C1-C3) is the best arrangement for both cases. However, it needs to be tested by applying this to actual process condition, in this case by implementing it in simulated LNG process.

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Jing, Dalei, and Jian Song. "Numerical Studies on the Thermal Performances of Electroosmotic Flow in Y-Shaped Microchannel Heat Sink." Coatings 10, no. 4 (April 13, 2020): 380. http://dx.doi.org/10.3390/coatings10040380.

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This paper numerically studies the thermal performances of electroosmotic flow (EOF) in a symmetric Y-shaped microchannel heat sink (MCHS) having a constant total channel surface area, that is, constant convective heat transfer area. It is found that the average convective heat transfer coefficient of EOF increases with the increasing driven voltage, which is attributed to the increase of EOF flowrate with the increasing driven voltage. However, the maximum MCHS temperature shows an increasing after decreasing trend with the driven voltage owing to the dramatically increasing Joule heating when the voltage is large enough. Further, both the maximum MCHS temperature and average convective heat transfer coefficient are sensitive to the cross-sectional dimensions of the Y-shaped microchannels. The thermal performances of EOF in the Y-shaped MCHS show a strengthening to weakening trend with the increasing daughter-to-parent channel diameter ratio of the Y-shaped microchannel with circular cross-sectional shape, and show a similar strengthening to weakening trend with the increasing daughter-to-parent channel width ratio and the increasing microchannel height of the Y-shaped microchannel with rectangular cross-sectional shape. These cross-sectional dimension dependences of thermal performances are related to the increasing to decreasing trend of EOF flowrate changing with the microchannel cross-sectional dimensions.

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Journal articles on the topic 'Mchesi'

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