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https://www.readbyqxmd.com/read/28792440/interfacial-reaction-and-mechanical-properties-of-sn-bi-solder-joints
#1
Fengjiang Wang, Ying Huang, Zhijie Zhang, Chao Yan
Sn-Bi solder with different Bi content can realize a low-to-medium-to-high soldering process. To obtain the effect of Bi content in Sn-Bi solder on the microstructure of solder, interfacial behaviors in solder joints with Cu and the joints strength, five Sn-Bi solders including Sn-5Bi and Sn-15Bi solid solution, Sn-30Bi and Sn-45Bi hypoeutectic and Sn-58Bi eutectic were selected in this work. The microstructure, interfacial reaction under soldering and subsequent aging and the shear properties of Sn-Bi solder joints were studied...
August 9, 2017: Materials
https://www.readbyqxmd.com/read/28776899/an-alternative-sterility-assessment-for-parenteral-drug-products-using-isothermal-microcalorimetry
#2
D Brueckner, S Krähenbühl, U Zuber, G Bonkat, O Braissant
AIMS: Production and release of injectable drug solutions are highly regulated since the administration of injectables bypasses natural body barriers. The sterility test is the last opportunity of product quality assessment. However, sterility is currently assessed by visual inspection (VI) that is time consuming and somewhat subjective. Therefore, we assessed isothermal microcalorimetry (IMC) as a replacement for the VI of the filtration based state-of-the-art sterility control. METHODS AND RESULTS: We used ATCC strains and house isolates to artificially contaminate frequently produced monoclonal antibodies (Avastin, Mabthera, Herceptin)...
August 4, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28776393/superiority-of-amino-modified-chiral-mesoporous-silica-nanoparticles-in-delivering-indometacin
#3
Jing Li, Yingyu Guo, Heran Li, Lei Shang, Sanming Li
The present study established indometacin (IMC) delivery system with chiral mesoporous silica nanoparticles (CMSNs) and amino-modified chiral mesoporous silica nanoparticles (Amino-CMSNs) that previously reported as pharmaceutical excipients, and their systemic biological effects, mainly consisting of in vitro drug intestinal permeability, haemolysis assay, in vivo pharmacokinetics, anti-inflammation pharmacodynamics and gastric irritation, were addressed. It turned out that the two IMC delivery systems established by CMSN and Amino-CMSN significantly improved drug intestinal permeability due to the improved drug dissolution caused by conversion of drug crystalline state to amorphous phase...
August 4, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28772917/effects-of-cuznal-particles-on-properties-and-microstructure-of-sn-58bi-solder
#4
Fan Yang, Liang Zhang, Zhi-Quan Liu, Su Juan Zhong, Jia Ma, Li Bao
With the purpose of improving the properties of the Sn-58Bi lead-free solder, micro-CuZnAl particles ranging from 0 to 0.4 wt % were added into the low temperature eutectic Sn-58Bi lead-free solder. After the experimental testing of micro-CuZnAl particles on the properties and microstructure of the Sn-58Bi solders, it was found that the wettability of the Sn-58Bi solders was obviously improved with addition of CuZnAl particles. When the addition of CuZnAl particles was 0.2 wt %, the wettability of the Sn-58Bi solder performed best...
May 19, 2017: Materials
https://www.readbyqxmd.com/read/28772811/packaging-reliability-effect-of-enig-and-enepig-surface-finishes-in-board-level-thermal-test-under-long-term-aging-and-cycling
#5
Chaobo Shen, Zhou Hai, Cong Zhao, Jiawei Zhang, John L Evans, Michael J Bozack, Jeffrey C Suhling
This study illustrates test results and comparative literature data on the influence of isothermal aging and thermal cycling associated with Sn-1.0Ag-0.5Cu (SAC105) and Sn-3.0Ag-0.5Cu (SAC305) ball grid array (BGA) solder joints finished with ENIG and ENEPIG on the board side and ENIG on the package side compared with ImAg plating on both sides. The resulting degradation data suggests that the main concern for 0.4 mm pitch 10 mm package size BGA is package side surface finish, not board side. That is, ENIG performs better than immersion Ag for applications involving long-term isothermal aging...
April 26, 2017: Materials
https://www.readbyqxmd.com/read/28759012/berberine-inhibits-colitis-associated-tumorigenesis-via-suppressing-inflammatory-responses-and-the-consequent-egfr-signaling-involved-tumor-cell-growth
#6
Dandan Li, Youyu Zhang, Kun Liu, Yujie Zhao, Beibei Xu, Liang Xu, Li Tan, Yuan Tian, Cunxi Li, Wenqing Zhang, Hanwei Cao, Yan-Yan Zhan, Tianhui Hu
The anti-inflammatory and anti-tumor effects of berberine, a traditional Chinese medicine, were separately discovered in pathological intestinal tissues. However, whether the anti-inflammatory effect of berberine contributes to its anti-tumor effect on colitis-associated colorectal cancer (CACRC) remains unknown. In the present study, we found that berberine effectively inhibited colitis-associated tumorigenesis and colonic epithelium hyperproliferation in dextran sulfate sodium (DSS)-treated Apc(Min/+) mice...
July 31, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28746521/playful-interventions-increase-knowledge-about-healthy-habits-and-cardiovascular-risk-factors-in-children-the-cardiokids-randomized-study
#7
Fátima H Cecchetto, Daniela B Pena, Lucia C Pellanda
Background: Childhood obesity is an important health problem worldwide. In this context, there is a need for the development and evaluation of innovative educational interventions targeting prevention and formation of health habits. Objectives: To ascertain the impact of ludic workshops on children's knowledge, self-care, and body weight. Methods: This was a randomized, clinical study with 79 students aged 7-11 years, conducted from March to November 2012...
July 20, 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28746520/relationship-between-cardiometabolic-parameters-and-elevated-resting-and-effort-heart-rate-in-schoolchildren
#8
Cristiane Fernanda da Silva, Miria Suzana Burgos, Priscila Tatiana da Silva, Leandro Tibiriçá Burgos, Letícia Welser, Ana Paula Sehn, Jorge André Horta, Elza Daniel de Mello, Cézane Priscila Reuter
Background: Little has been studied on heart rate and its relationship with metabolic disorders. Objective: To identify possible association between heart rate (HR) and metabolic disorders in children and adolescents. Methods: This cross-sectional study evaluated 2.098 subjects, aged between 7 and 17 years. The variables evaluated were: HR, systolic (SBP) and diastolic blood pressure (DBP), pulse pressure (PP), double-product (DP), myocardial oxygen consumption (mVO2), lipids, glucose and uric acid levels, body mass index (BMI) and waist circumference (WC)...
July 20, 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28738147/round-robin-study-molecular-simulation-of-thermodynamic-properties-from-models-with-internal-degrees-of-freedom
#9
Michael Schappals, Andreas Mecklenfeld, Leif Kröger, Vitalie Botan, Andreas Köster, Simon Stephan, Edder J García, Gabor Rutkai, Gabriele Raabe, Peter Klein, Kai Leonhard, Colin W Glass, Johannes Lenhard, Jadran Vrabec, Hans Hasse
Thermodynamic properties are often modeled by classical force fields which describe the interactions on the atomistic scale. Molecular simulations are used for retrieving thermodynamic data from such models, and many simulation techniques and computer codes are available for that purpose. In the present round robin study, the following fundamental question is addressed: Will different user groups working with different simulation codes obtain coinciding results within the statistical uncertainty of their data? A set of 24 simple simulation tasks is defined and solved by five user groups working with eight molecular simulation codes: DL_POLY, GROMACS, IMC, LAMMPS, ms2, NAMD, Tinker, and TOWHEE...
August 7, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28697888/regulated-expansion-and-survival-of-chimeric-antigen-receptor-modified-t-cells-using-small-molecule-dependent-inducible-myd88-cd40
#10
Aaron E Foster, Aruna Mahendravada, Nicholas P Shinners, Wei-Chun Chang, Jeannette Crisostomo, An Lu, Mariam Khalil, Eva Morschl, Joanne L Shaw, Sunandan Saha, MyLinh T Duong, Matthew R Collinson-Pautz, David L Torres, Tania Rodriguez, Tsvetelina Pentcheva-Hoang, J Henri Bayle, Kevin M Slawin, David M Spencer
Anti-tumor efficacy of T cells engineered to express chimeric antigen receptors (CARs) is dependent on their specificity, survival, and in vivo expansion following adoptive transfer. Toll-like receptor (TLR) and CD40 signaling in T cells can improve persistence and drive proliferation of antigen-specific CD4(+) and CD8(+) T cells following pathogen challenge or in graft-versus-host disease (GvHD) settings, suggesting that these costimulatory pathways may be co-opted to improve CAR-T cell persistence and function...
July 8, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28659892/a-complex-endomembrane-system-in-the-archaeon-ignicoccus-hospitalis-tapped-by-nanoarchaeum-equitans
#11
Thomas Heimerl, Jennifer Flechsler, Carolin Pickl, Veronika Heinz, Benjamin Salecker, Josef Zweck, Gerhard Wanner, Stefan Geimer, Rachel Y Samson, Stephen D Bell, Harald Huber, Reinhard Wirth, Louie Wurch, Mircea Podar, Reinhard Rachel
Based on serial sectioning, focused ion beam scanning electron microscopy (FIB/SEM), and electron tomography, we depict in detail the highly unusual anatomy of the marine hyperthermophilic crenarchaeon, Ignicoccus hospitalis. Our data support a complex and dynamic endomembrane system consisting of cytoplasmic protrusions, and with secretory function. Moreover, we reveal that the cytoplasm of the putative archaeal ectoparasite Nanoarchaeum equitans can get in direct contact with this endomembrane system, complementing and explaining recent proteomic, transcriptomic and metabolomic data on this inter-archaeal relationship...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28658332/does-the-attention-deficit-hyperactivity-disorder-interfere-with-bariatric-surgery-results
#12
Doglas Gobbi Marchesi, Jovana Gobbi Marchesi Ciriaco, Gustavo Peixoto Soares Miguel, Gustavo Adolfo Pavan Batista, Camila Pereira Cabral, Larissa Carvalho Fraga
Objective: to analyze possible negative effects of Attention Deficit Hyperactivity Disorder (ADHD) on the success of bariatric surgery. Methods: we evaluated forty patients undergoing bariatric surgery and with regular post-operative follow-up of at least one year. To all, we applied the questionnaire advocated in the fourth edition of the Diagnostic and Statistical Manual (DSM-IV) of the American Psychiatric Association for ADHD, as well as analyzed their postoperative data...
March 2017: Revista do Colégio Brasileiro de Cirurgiões
https://www.readbyqxmd.com/read/28628670/combining-ability-heritability-and-genotypic-relations-of-different-physiological-traits-in-cacao-hybrids
#13
Allan Silva Pereira, Alex-Alan Furtado de Almeida, Márcia Christina da Silva Branco, Marcio Gilberto Cardoso Costa, Dario Ahnert
Selecting parents and evaluating progenies is a very important step in breeding programs and involves approaches such as understanding the initial stages of growth and characterizing the variability among genotypes for different parameters, such as physiological, growth, biomass partitioning and nutrient translocation to the aerial part. In these cases, facilitating tools can be used to understand the involved gene dynamics, such as diallel crosses and genetic and phenotypic correlations. Our main hypothesis is that the contrasting phenotypes of these parental genotypes of cocoa used are due to genetic factors, and progenies derived from crosses of these parental genotypes are useful for breeding programs related to plant architecture, physiological parameters and translocation of mineral nutrients...
2017: PloS One
https://www.readbyqxmd.com/read/28627202/infrapeso-materno-y-resultados-perinatales-estudio-de-cohortes-retrospectivo
#14
Ángel Vilar Sánchez, Juan Jesús Fernández Alba, María Del Carmen González Macías, María Del Carmen Paublete Herrera, Concepción Carnicer Fuentes, Florentino Carral San Laureano, Rafael Torrejón Cardoso, Luis Javier Moreno Corral
Introducción: algunos estudios han asociado el infrapeso materno con resultados perinatales adversos tales como aborto espontáneo, desprendimiento placentario, feto pequeño para edad gestacional, crecimiento intrauterino retardado y parto pretérmino.Objetivos: determinar si el infrapeso materno al inicio de la gestación influye sobre la forma de inicio y vía del parto, peso al nacer, índice de Apgar al minuto 5 y edad gestacional en el momento del parto.Métodos: estudio de cohortes retrospectivo en gestantes adscritas al Hospital Universitario de Puerto Real...
June 5, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28627185/adherencia-y-tolerancia-como-claves-en-la-detenci%C3%A3-n-de-la-p%C3%A3-rdida-de-peso-en-pacientes-oncol%C3%A3-gicos-sometidos-a-radioterapia-mediante-una-estrategia-de-suplementaci%C3%A3-n-precoz-con-una-f%C3%A3-rmula-enteral-hipercal%C3%A3-rica-e-hiperproteica-espec%C3%A3-fica
#15
Jose M García Almeida, Yolanda Lupiáñez Pérez, Mercedes Blanco Naveira, Josefina Ruiz Nava, José Antonio Medina, Isabel Cornejo Pareja, Ana Gómez Pérez, María Molina Vega, José A López-Medina, Francisco Tinahones Madueño
Introducción: en pacientes con riesgo nutricional, la Sociedad Europea de Clínica y Metabolismo (ESPEN) y Parenteral recomienda suplementos nutricionales durante el tratamiento oncológico para prevenir la pérdida de peso involuntaria.Objetivos: nuestro objetivo es conocer el cumplimiento, la aceptabilidad y la tolerancia de un suplemento hiperproteico, hipercalórico, rico en omega 3 en pacientes oncológicos.Métodos: estudio unicéntrico, observacional y prospectivo en pacientes oncológicos con un suplemento nutricional hiperproteico, hipercalórico, rico en omega 3 y de bajo volumen...
June 5, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28627182/factores-predictores-de-hipertrigliceridemia-en-pacientes-hospitalizados-con-nutrici%C3%A3-n-parenteral-total
#16
Maria Julia Ocón Bretón, Ana Isabel Ilundain Gonzalez, Jara Altemir Trallero, Ana Agudo Tabuenca, José Antonio Gimeno Orna
Introducción:la nutrición parenteral total (NPT) es una modalidad de soporte nutricional indicada en aquellas situaciones donde el enfermo no puede cubrir sus requerimientos nutricionales por vía enteral. A pesar de ser una terapia segura y efi caz, no está exenta de complicaciones, entre las que cabe destacar, por su frecuencia, la hipertrigliceridemia. La etiología de esta complicación metabólica es compleja y multifactorial.Objetivos: el objetivo de este trabajo fue determinar los factores de riesgo asociados al desarrollo de hipertrigliceridemia en pacientes adultos hospitalizados no críticos que reciben NPT a corto plazo y evaluar el efecto que una emulsión lipídica enriquecida en ácidos grasos poliinsaturados omega-3 ejerce sobre esta complicación metabólica...
June 5, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28584601/prevalence-and-risk-factors-for-sulfadoxine-antibody-among-patients-undergoing-treatment-for-malaria-in-benin-city-nigeria
#17
Kingsley Ikuoyogie, Helen Oroboghae Ogefere, Richard Omoregie
OBJECTIVES: Because of lack of data on the prevalence of sulfadoxine antibody, this study was conducted to determine the prevalence of sulfadoxine antibodies and its possible risk factors. METHODS: Blood specimens were collected from 500 patients undergoing treatment for malaria at Central Hospital, Benin City, Nigeria. A structured questionnaire was used to collect information and sociodemographic data. Sulfadoxine antibodies were detected by drug absorption (DAT) and immune complex (IMC) methods...
May 2017: Oman Medical Journal
https://www.readbyqxmd.com/read/28577997/interfacial-interaction-track-of-amorphous-solid-dispersions-established-by-water-soluble-polymer-and-indometacin
#18
Jing Li, Na Fan, Xin Wang, Chang Li, Mengchi Sun, Jian Wang, Qiang Fu, Zhonggui He
The present work studied interfacial interactions of amorphous solid dispersions matrix of indometacin (IMC) that established using PVP K30 (PVP) and PEG 6000 (PEG) by focusing on their interaction forces and wetting process. Infrared spectroscopy (IR), raman spectroscopy, X-ray photoelectron spectra and contact angle instrument were used throughout the study. Hydrogen bond energy formed between PEG and IMC were stronger than that of PVP and IMC evidenced by molecular modeling measurement. The blue shift of raman spectroscopy confirmed that hydrogen bonding forces were formed between IMC and two polymers...
August 30, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28577855/quantitative-analyses-reveal-distinct-sensitivities-of-the-capture-of-hiv-1-primary-viruses-and-pseudoviruses-to-broadly-neutralizing-antibodies
#19
Jiae Kim, Ousman Jobe, Kristina K Peachman, Nelson L Michael, Merlin L Robb, Mangala Rao, Venigalla B Rao
Development of vaccines capable of eliciting broadly neutralizing antibodies (bNAbs) is a key goal to controlling the global AIDS epidemic. To be effective, bNAbs must block the capture of HIV-1 to prevent viral acquisition and establishment of reservoirs. However, the role of bNAbs, particularly during initial exposure of primary viruses to host cells, has not been fully examined. Using a sensitive, quantitative, and high-throughput qRT-PCR assay, we found that primary viruses were captured by host cells and converted into a trypsin-resistant form in less than five minutes...
August 2017: Virology
https://www.readbyqxmd.com/read/28566633/co-administration-of-magnesium-ion-prevents-indomethacin-induced-intestinal-ulcerogenic-lesions-in-adjuvant-induced-arthritis-rats
#20
Noriaki Nagai, Akina Ueno, Tadatoshi Tanino, Mikako Oka, Yoshimasa Ito
In a study to find ways to prevent the side effects of indomethacin (IMC), we previously reported that magnesium ion (Mg(2+)) can prevent the onset of IMC-induced gastric mucosa in adjuvant-induced arthritis (AA) rats, a model for rheumatoid arthritis (RA). In this study we investigated whether the co-administration of IMC and Mg(2+) prevents the formation and aggravation of intestinal ulcerogenic lesions in AA rats. The single oral administration of an excessive dose of IMC (40 mg/kg) induces hemorrhagic lesions and nitric oxide (NO) production via inducible nitric oxide synthase (iNOS) in the jejunal and ileal mucosa of AA rats, and the extent of the lesions, as well as iNOS and NO levels in AA rats are higher than in normal rats...
2017: Biological & Pharmaceutical Bulletin
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