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https://www.readbyqxmd.com/read/29332950/microwave-evaluation-of-electromigration-susceptibility-in-advanced-interconnects
#1
Christopher E Sunday, Dmitry Veksler, Kin C Cheung, Yaw S Obeng
Traditional metrology has been unable to adequately address the needs of the emerging integrated circuits (ICs) at the nano scale; thus, new metrology and techniques are needed. For example, the reliability challenges in fabrication need to be well understood and controlled to facilitate mass production of through-substrate-via (TSV) enabled three-dimensional integrated circuits (3D-ICs). This requires new approaches to the metrology. In this paper, we use the microwave propagation characteristics to study the reliability issues that precede the physical damage caused by electromigration in the Cu-filled TSVs...
November 7, 2017: Journal of Applied Physics
https://www.readbyqxmd.com/read/29331236/pregnancy-related-complications-and-perinatal-outcomes-resulting-from-transfer-of-cryopreserved-versus-fresh-embryos-in%C3%A2-vitro-fertilization-a-meta-analysis
#2
Tingting Sha, Xunqiang Yin, Wenwei Cheng, Isaac Yaw Massey
OBJECTIVE: To provide an updated comparison of pregnancy-related complications and adverse perinatal outcomes of pregnancies conceived after frozen embryo transfer (FET) versus fresh embryo transfer (fresh ET). DESIGN: Meta-analysis. SETTING: University. PATIENT(S): Pregnancies resulting from FET versus fresh ET. INTERVENTIONS(S): Pubmed, Embase, Cochrane Library, Google Scholar, and Chinese databases, including the China National Knowledge Infrastructure Database, Wanfang, and Chinese Scientific Journals Full-Text Database were searched by two independent reviewers from January 1980 to September 2017...
January 11, 2018: Fertility and Sterility
https://www.readbyqxmd.com/read/29323196/the-rotation-of-microrobot-simplifies-3d-control-inside-microchannels
#3
Antoine Barbot, Dominique Decanini, Gilgueng Hwang
This paper focuses on the control of rotating helical microrobots inside microchannels. We first use a 50 μm long and 5 μm in diameter helical robot to prove that the proximity of the channel walls create a perpendicular force on the robot. This force makes the robot orbit around the channel center line. We also demonstrate experimentally that this phenomenon simplifies the robot control by guiding it on a channel even if the robot propulsion is not perfectly aligned with the channel direction. We then use numerical simulations, validated by real experimental cases, to show different implications on the microrobot control of this orbiting phenomenon...
January 11, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29322521/fitting-unanchored-puzzle-pieces-in-the-skeleton-appropriate-3d-scapular-positions-for-the-quadrupedal-support-in-tetrapods
#4
Shin-Ichi Fujiwara
Deducing the scapular positions of extinct tetrapod skeletons remains difficult, because the scapulae and rib cage are connected with each other not directly by skeletal joint, but by thoracic muscles. In extant non-testudine quadrupedal tetrapods, the top positions of the scapulae/suprascapulae occur at the anterior portion of the rib cage, above the vertebral column and near the median plane. The adequacy of this position was tested using three-dimensional mechanical models of Felis, Rattus and Chamaeleo that assumed stances on a forelimb on a single side and the hindlimbs...
January 11, 2018: Journal of Anatomy
https://www.readbyqxmd.com/read/29320614/deep-tumor-penetrating-bioparticulates-inspired-burst-intracelluar-drug-release-for-precision-chemo-phototherapy
#5
Ruoning Wang, Yue Han, Bo Sun, Ziqiang Zhao, Yaw Opoku-Damoah, Hao Cheng, Huaqing Zhang, Jianping Zhou, Yang Ding
The relevance of personalized medicine has inspired research for individually concerted diagnosis and therapy. Numerous efforts are devoted to designing drug particulates with capabilities of tumor penetrating and subcellular trafficking to concurrently discharge theranostics in response to multistimulations. In this study, a bioinspired particulate, formulated with whole components of native high-density lipoproteins (HDLs) and decorated with the tumor-penetrating peptide iRGD, is proposed to promote tumor penetration of HDLs (pHDLs) together with payloads...
January 10, 2018: Small
https://www.readbyqxmd.com/read/29313451/microcystin-lr-degradation-utilizing-a-novel-effective-indigenous-bacterial-community-yfmcd1-from-lake-taihu
#6
Fei Yang, Isaac Yaw Massey, Jian Guo, Shu Yang, Yuepu Pu, Weiming Zeng, Hongzhuan Tan
Microcystins (MC) produced by species of cyanobacteria including Microcystis, Anabaena, and Aphanizomenon are a group of monocyclic hepatotoxins posing serious threat to public health. Microcystin-LR (MC-LR) is the most toxic and frequently encountered microcystin variant in the environment, and thus removal of this toxin using bacteria was shown to be a reliable, efficient, and cost-effective method that avoids utilization of chemicals that may produce potentially harmful by-products. The aim of this study was to determine whether a novel indigenous bacterial community designated YFMCD1 was effective in destroying MC...
January 9, 2018: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/29311573/large-dynamic-range-pressure-sensor-based-on-two-semicircle-holes-microstructured-fiber
#7
Zhengyong Liu, Lin Htein, Kang-Kuen Lee, Kin-Tak Lau, Hwa-Yaw Tam
This paper presents a sensitive and large dynamic range pressure sensor based on a novel birefringence microstructured optical fiber (MOF) deployed in a Sagnac interferometer configuration. The MOF has two large semicircle holes in the cladding and a rectangular strut with germanium-doped core in the center. The fiber structure permits surrounding pressure to induce large effective index difference between the two polarized modes. The calculated and measured group birefringence of the fiber are 1.49 × 10-4, 1...
January 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29306542/prospective-study-to-determine-early-hypertrophy-of-the-contra-lateral-liver-lobe-after-unilobar-yttrium-90-selective-internal-radiation-therapy-in-patients-with-hepatocellular-carcinoma
#8
Jin Yao Teo, John Carson Allen, David Chee Eng Ng, Julianah Bee Abdul Latiff, Su Pin Choo, David Wai-Meng Tai, Albert Su Chong Low, Foong Koon Cheah, Jason Pik Eu Chang, Juinn Huar Kam, Victor T W Lee, Alexander Yaw Fui Chung, Chung Yip Chan, Pierce Kah Hoe Chow, Brian K P Goh
BACKGROUND: Liver resection is a major curative option in patients presenting with hepatocellular carcinoma. An inadequate functional liver remnant is a major limiting factor precluding liver resection. In recent years, hypertrophy of the functional liver remnant after selective internal radiation therapy hypertrophy has been observed, but the degree of hypertrophy in the early postselective internal radiation therapy period has not been well studied. METHODS: We conducted a prospective study on patients undergoing unilobar, Yttrium-90 selective internal radiation therapy for hepatocellular carcinoma to evaluate early hypertrophy at 4-6 weeks and 8-12 weeks after selective internal radiation therapy...
January 3, 2018: Surgery
https://www.readbyqxmd.com/read/29300173/a-tale-of-two-tails-developing-an-avian-inspired-morphing-actuator-for-yaw-control-and-stability
#9
Lawren L Gamble, Daniel J Inman
Motivated by the lack of research in tailless morphing aircraft in addition to the current inability to measure the resultant aerodynamic forces and moments of bird control maneuvers, this work aims to develop and test a multi-functional morphing control surface based on the horizontal tail of birds for a low-radar-signature UAV. Customized Macro Fiber Composite (MFC) actuators were designed to achieve yaw control across a range of sideslip angles by inducing three dimensional curvature as a result of bending-twisting coupling, a well-known phenomenon in classical fiber composite theory...
January 4, 2018: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/29287676/nonalcoholic-fatty-liver-disease-and-sarcopenia-in-a-western-population-nhanes-iii-the-importance-of-sarcopenia-definition
#10
Tao-Chun Peng, Li-Wei Wu, Wei-Liang Chen, Fang-Yih Liaw, Yaw-Wen Chang, Tung-Wei Kao
BACKGROUND: Recent epidemiological studies have shown that sarcopenia is associated with non-alcoholic fatty liver disease (NAFLD) and advanced fibrosis in an Asian population. We investigated whether NAFLD is associated with a higher risk of sarcopenia using a different definition in elderly patients. METHODS: A population-based cross-sectional survey of US patients was conducted, involving 2551 participants aged 60-75 years. NAFLD was measured by ultrasound. Sarcopenia was defined by both a low muscle mass and poor muscle function...
December 8, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/29281641/development-of-a-multilocus-sequence-typing-mlst-scheme-for-treponema-pallidum-subsp-pertenue-application-to-yaws-in-lihir-island-papua-new-guinea
#11
Charmie Godornes, Lorenzo Giacani, Alyssa E Barry, Oriol Mitja, Sheila A Lukehart
BACKGROUND: Yaws is a neglected tropical disease, caused by Treponema pallidum subsp. pertenue. The disease causes chronic lesions, primarily in young children living in remote villages in tropical climates. As part of a global yaws eradication campaign initiated by the World Health Organization, we sought to develop and evaluate a molecular typing method to distinguish different strains of T. pallidum subsp. pertenue for disease control and epidemiological purposes. METHODS AND PRINCIPAL FINDINGS: Published genome sequences of strains of T...
December 27, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29273433/membrane-damaging-activities-of-mannosylated-ovalbumin-are-involved-in-its-antibacterial-action
#12
Yi-Jun Shi, Ren-Tsung Wang, Yu-Hui Chu, Ying-Jung Chen, Ching-Chia Tang, Yaw-Syan Fu, Yuan-Chin Lee, Liang-Jun Wang, Chia-Hui Huang, Long-Sen Chang
Mannosylated ovalbumin (Man-OVA) prepared by modification of carboxyl groups with p-aminophenyl α-d-mannopyranoside shows an increase of net positive charge, which may enhance its binding to bacterial membrane. Thus, we aimed to investigate whether Man-OVA exerts antibacterial activity on Escherichia coli and Staphylococcus aureus via membrane-perturbing effect. Man-OVA inhibited the growth of E. coli and S. aureus, whereas ovalbumin (OVA) did not show any antibacterial activity. Moreover, Man-OVA induced an increase in the membrane permeability of E...
December 19, 2017: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/29259571/a-public-database-of-immersive-vr-videos-with-corresponding-ratings-of-arousal-valence-and-correlations-between-head-movements-and-self-report-measures
#13
Benjamin J Li, Jeremy N Bailenson, Adam Pines, Walter J Greenleaf, Leanne M Williams
Virtual reality (VR) has been proposed as a methodological tool to study the basic science of psychology and other fields. One key advantage of VR is that sharing of virtual content can lead to more robust replication and representative sampling. A database of standardized content will help fulfill this vision. There are two objectives to this study. First, we seek to establish and allow public access to a database of immersive VR video clips that can act as a potential resource for studies on emotion induction using virtual reality...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/29250757/acute-onset-of-parkinsonism-an-end-stage-renal-disease-patient
#14
Chun-Hao Lai, Yu-Wei Hsu, Jiunn-Tay Lee, Yaw-Don Hsu, Chun-An Cheng, Chia-Kuang Tsai
PURPOSE: The osmotic demyelination syndrome (ODS) has been identified as a neurological complication of the rapid correction of hyponatremia. In recent years, however, various medical conditions have been associated with the development of ODS, irrelevant to changes in serum sodium. We present a rare case of a eunatremic patient who developed ODS with manifestation of parkinsonism. CASE: A 55 years old woman who has hypertension, type 2 diabetes nephropathy in end-stage renal disease under maintenance hemodialysis came to us with complaint about newly developed resting tremor of bilateral upper limbs, slowness of movements and small shuffling steps...
June 15, 2017: Acta Neurologica Taiwanica
https://www.readbyqxmd.com/read/29241533/a-small-molecule-oligosaccharyltransferase-inhibitor-with-pan-flaviviral-activity
#15
Andreas S Puschnik, Caleb D Marceau, Yaw Shin Ooi, Karim Majzoub, Natalie Rinis, Joseph N Contessa, Jan E Carette
The mosquito-borne flaviviruses include important human pathogens such as dengue, Zika, West Nile, and yellow fever viruses, which pose a serious threat for global health. Recent genetic screens identified endoplasmic reticulum (ER)-membrane multiprotein complexes, including the oligosaccharyltransferase (OST) complex, as critical flavivirus host factors. Here, we show that a chemical modulator of the OST complex termed NGI-1 has promising antiviral activity against flavivirus infections. We demonstrate that NGI-1 blocks viral RNA replication and that antiviral activity does not depend on inhibition of the N-glycosylation function of the OST...
December 12, 2017: Cell Reports
https://www.readbyqxmd.com/read/29241020/an-automatic-lab-on-disc-system-for-blood-typing
#16
Yaw-Jen Chang, Yi-Hua Fan, Shia-Chung Chen, Kuan-Hua Lee, Liao-Yong Lou
A blood-typing assay is a critical test to ensure the serological compatibility of a donor and an intended recipient prior to a blood transfusion. This article presents a lab-on-disc blood-typing system to conduct a total of eight assays for a patient, including forward-typing tests, reverse-typing tests, and irregular-antibody tests. These assays are carried out in a microfluidic disc simultaneously. A blood-typing apparatus was designed to automatically manipulate the disc. The blood type can be determined by integrating the results of red blood cell (RBC) agglutination in the microchannels...
December 1, 2017: SLAS Technology
https://www.readbyqxmd.com/read/29234524/viral-hepatitis-endemicity-and-trends-among-an-asymptomatic-adult-population-in-ho-a-5-year-retrospective-study-at-the-ho-municipal-hospital-ghana
#17
Sylvester Yao Lokpo, James Osei-Yeboah, Gameli Kwame Norgbe, Patrick Kwasi Owiafe, Felix Ayroe, Francis Abeku Ussher, Mavis Popuelle Dakorah, John Gameli Deku, Nana Yaw Barimah Manaphraim, Emmanuel Akomanin Asiamah, Tibemponi Ntoni, Prince Senyo Kwasi Nyamadi, Edward Yiadom Boakye, Roseline Avorkliyah
Background: Using prospective blood donors as a proxy, this study was aimed at estimating the burden and five-year (2012-2016) trend of viral hepatitis (HBV and HCV) infection among asymptomatic adult population in Ho. Materials and Methods: A retrospective analysis was done on secondary data extracted from the hospital archives comprising 4,180 prospective blood donors from January 2012 to December 2016. Demographic variables included age and sex, as well as place of residence...
2017: Hepatitis Research and Treatment
https://www.readbyqxmd.com/read/29234443/psychotropic-effects-of-an-alcoholic-extract-from-the-leaves-of-albizia-zygia-leguminosae-mimosoideae
#18
Patrick Amoateng, Dorcas Osei-Safo, Kennedy Kwami Edem Kukuia, Samuel Adjei, Obed Awintuma Akure, Constance Agbemelo-Tsomafo, Shirley Nyarko Adu-Poku, Kenneth Yaw Agyeman-Badu
Background: Albizia zygia is used in Ghanaian traditional medicine for the management of mental disorders. The present study tested the hypothesis that an extract of the leaves of Albizia zygia (AZE) may possess antipsychotic and antidepressant properties. Method: The novelty- and apomorphine-induced locomotor and rearing behaviours of AZE in mice were explored in an open-field observational test system. The effects of AZE in apomorphine-induced cage climbing test, extract-induced catalepsy, and haloperidol-induced catalepsy on mice were also investigated...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29234399/antimicrobial-activities-and-time-kill-kinetics-of-extracts-of-selected-ghanaian-mushrooms
#19
Theresa Appiah, Yaw Duah Boakye, Christian Agyare
The rapid rise of antimicrobial resistance is a worldwide problem. This has necessitated the need to search for new antimicrobial agents. Mushrooms are rich sources of potential antimicrobial agents. This study investigated the antimicrobial properties of methanol extracts of Trametes gibbosa, Trametes elegans, Schizophyllum commune, and Volvariella volvacea. Agar well diffusion, broth microdilution, and time-kill kinetic assays were used to determine the antimicrobial activity of the extracts against selected test organisms...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29225768/about-face-matching-unfamiliar-faces-across-rotations-of-view-and-lighting
#20
Simone Favelle, Harold Hill, Peter Claes
Matching the identities of unfamiliar faces is heavily influenced by variations in their images. Changes to viewpoint and lighting direction during face perception are commonplace across yaw and pitch axes and can result in dramatic image differences. We report two experiments that, for the first time, factorially investigate the combined effects of lighting and view angle on matching performance for unfamiliar faces. The use of three-dimensional head models allowed control of both lighting and viewpoint. We found viewpoint effects in the yaw axis with little to no effect of lighting...
November 2017: I-Perception
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