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https://www.readbyqxmd.com/read/28444846/forensic-analysis-of-latent-fingermarks-by-silver-assisted-ldi-imaging-ms-on-non-conductive-surfaces
#1
Nidia Lauzon, Martin Dufresne, Alexandre Beaudoin, Pierre Chaurand
Silver-assisted laser desorption ionization (AgLDI) imaging mass spectrometry (IMS) has been demonstrated to be a useful technology for fingermark analysis allowing for the detection of several classes of endogenous as well as exogenous compounds. Ideally, in IMS analyses, the fingermarks are deposited under controlled conditions on metallized conductive target slides. However, in forensic investigations, fingermarks are often found on a variety of non-conductive surfaces. A sputtered silver layer renders the target surface conductive, which allows the analyses of insulating surfaces by time-of-flight (TOF) IMS...
April 26, 2017: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/28444613/no-difference-in-congenital-anomalies-prevalence-irrespective-of-insemination-methods-and-freezing-procedure-cohort-study-over-fourteen-years-of-an-art-population-in-the-south-of-france
#2
Any Beltran Anzola, Vanessa Pauly, Debbie Montjean, Line Meddeb, Cendrine Geoffroy-Siraudin, Roland Sambuc, Pierre Boyer, Marie-José Gervoise-Boyer
PURPOSE: A retrospective cohort study was conducted to evaluate and compare the prevalence of congenital anomalies in babies and fetuses conceived after four procedures of assisted reproduction technologies (ART). METHODS: The prevalence of congenital anomalies was compared retrospectively between 2750 babies and fetuses conceived between 2001 and 2014 in vitro fertilization with standard insemination (IVF), IVF with intracytoplasmic sperm injection (ICSI), IVF with frozen embryo transfer (FET-IVF), and ICSI with frozen embryo transfer (FET-ICSI)...
March 23, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28443690/vitrified-warmed-blastocyst-transfer-on-the-5th-or-7th-day-of-progesterone-supplementation-in-an-artificial-cycle-a-randomised-controlled-trial
#3
A van de Vijver, P Drakopoulos, N P Polyzos, L Van Landuyt, S Mackens, S Santos-Ribeiro, V Vloeberghs, H Tournaye, C Blockeel
Prospective studies comparing different durations of progesterone supplementation before transfer of vitrified-warmed blastocysts in an artificial cycle are lacking. However, in oocyte donation programmes, the sporadic available evidence demonstrates considerable differences in clinical pregnancy rates according to the duration of progesterone administration. This randomised controlled trial (RCT), included 303 patients undergoing a frozen-thawed embryo transfer (FET) of one or two vitrified-warmed blastocyst(s) in an artificial cycle...
April 26, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28440614/chemical-vapor-deposition-growth-of-degenerate-p-type-mo-doped-res2-films-and-its-homojunction
#4
Jing-Kai Qin, Wen-Zhu Shao, Cheng-Yan Xu, Yang Li, Dan-Dan Ren, Xiao-Guo Song, Liang Zhen
Substitutional doping of transition metal dichalcogenides (TMDs) two-dimensional materials has proven to be effective in tuning their intrinsic properties, such as band gap, transport characteristics and magnetism. In this study, we realized substitutional doping of monolayer rhenium disulfide (ReS2) with Mo via chemical vapor deposition. Scanning transmission electron microscope (STEM) demonstrated that Mo atoms are successfully doped into ReS2 by substitutionally replacing Re atoms in the lattice. Electrical measurements revealed the degenerate p-type semiconductor behavior of Mo-doped ReS2 field effect transistors (FETs), in agreement with density functional theory (DFT) calculations...
April 25, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28437630/modified-natural-cycle-for-embryo-transfer-using-frozen-thawed-blastocysts-a-satisfactory-option
#5
Quoc V Le, Sina Abhari, Omar M Abuzeid, Jennifer DeAnna, Mohamed A Satti, Tarek Abozaid, Iqbal Khan, Mostafa I Abuzeid
OBJECTIVE: To describe pregnancy outcomes of frozen-thawed blastocysts cycles using modified natural cycle frozen embryo transfers (NC-FET) and down-regulated hormonally controlled frozen embryo transfers (HC-FET) protocols. STUDY DESIGN: This retrospective cohort study included all patients undergoing either modified NC-FET or down-regulated HC-FET using frozen-thawed day 5 embryos. Cycles with donor blastocysts were excluded. Four hundred twenty eight patients underwent a total of 493 FET cycles...
April 6, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28436650/coupling-two-dimensional-mote2-and-ingazno-thin-film-materials-for-hybrid-pn-junction-and-cmos-inverters
#6
Han Sol Lee, Kyunghee Choi, Jin Sung Kim, Sanghyuck Yu, Kyeong Rok Ko, Seongil Im
We report the fabrication of hybrid PN junction diode and complementary (CMOS) inverters, where 2D p-type MoTe2 and n-type thin film InGaZnO (IGZO) are coupled for each device process. IGZO thin film was initially patterned by conventional photolithography either for n-type material in a PN diode or for n-channel of top-gate field-effect transistors (FET) in CMOS inverter. The hybrid PN junction diode shows a good ideality factor of 1.57 and quite a high ON/OFF rectification ratio of ∼3 × 10(4). Under photons, our hybrid PN diode appeared somewhat stable only responding to high-energy photons of blue and ultraviolet...
April 26, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28428944/the-status-of-assisted-reproductive-technology-in-korea-in-2012
#7
Gyoung Hoon Lee, Hyun Jin Song, Young Min Choi, Hyuck Dong Han
OBJECTIVE: This study was designed to report the status of assisted reproductive technology (ART) therapy in South Korea between January 1, 2012 and December 31, 2012. METHODS: A localized online survey, originally developed by the International Committee Monitoring Assisted Reproductive Technologies, was first launched and provided to all available ART centers via email in 2015. Fresh embryo transfer (FET) cases were categorized as standard in vitro fertilization, intracytoplasmic sperm injection (ICSI), or half-ICSI...
March 2017: Clinical and Experimental Reproductive Medicine
https://www.readbyqxmd.com/read/28428525/-total-arch-replacement-using-manufactured-frozen-elephant-trunk-after-acute-type-a-dissection-repair
#8
Makoto Hibino, Masato Mutsuga, Hideki Oshima, Yuji Narita, Tomonobu Abe, Kazuro Fujimoto, Yoshiyuki Tokuda, Akihiko Usui
The purpose of this study is to assess the result of total arch replacement(TAR) using manufactured frozen elephant trunk(FET) for chronic aortic dissection after initial repair including the effect of aortic remodeling by the FET. Between 2003 and 2015, we performed 11 TAR using manufactured FET. Initial repairs before were 9 ascending aortic replacements and 2 Bentall operations. The entry of residual dissection was located at arch in 7 and at distal anastomosis site in 4. There was no hospital death. The operative complication included 2 surgical site infection, 1 interstitial pneumonia and 1 paraplegia with almost full recovery...
April 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28424473/highly-gate-tuneable-rashba-spin-orbit-interaction-in-a-gate-all-around-inas-nanowire-metal-oxide-semiconductor-field-effect-transistor
#9
K Takase, Y Ashikawa, G Zhang, K Tateno, S Sasaki
III-V semiconductors have been intensively studied with the goal of realizing metal-oxide-semiconductor field-effect transistors (MOSFETs) with high mobility, a high on-off ratio, and low power consumption as next-generation transistors designed to replace current Si technology. Of these semiconductors, a narrow band-gap semiconductor InAs has strong Rashba spin-orbit interaction, thus making it advantageous in terms of both high field-effect transistor (FET) performance and efficient spin control. Here we report a high-performance InAs nanowire MOSFET with a gate-all-around (GAA) structure, where we simultaneously control the spin precession using the Rashba interaction...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28405121/gnrh-agonist-treatment-improves-implantation-and-pregnancy-rates-of-frozen-thawed-embryos-transfer
#10
S A Hebisha, H M Adel
OBJECTIVE: To study the effect of GnRh agonist administration prior to estrogen-progesterone preparation of the endometrium on the implantation rate in frozen-thawed embryo transfer (FET) cycles in infertile patients treated with IVF/ICSI. DESIGN: Prospective controlled study. SETTING: Private center in Alexandria, Egypt. PATIENTS: Patients undergoing frozen-thawed embryo transfer FET. INTERVENTIONS: Patients were divided into two groups, A and B...
April 2017: Journal of Obstetrics and Gynaecology of India
https://www.readbyqxmd.com/read/28398491/pregnancy-and-neonatal-outcomes-following-letrozole-use-in-frozen-thawed-single-embryo-transfer-cycles
#11
T Tatsumi, S C Jwa, A Kuwahara, M Irahara, T Kubota, H Saito
STUDY QUESTION: Are pregnancy and neonatal outcomes following letrozole use comparable with natural and HRT cycles in patients undergoing single frozen-thawed embryo transfer (FET)? SUMMARY ANSWER: Letrozole use was significantly associated with higher rates of clinical pregnancy, clinical pregnancy with fetal heart beat and live birth, and with a lower rate of miscarriage, compared with natural and HRT cycles. WHAT IS KNOWN ALREADY: Letrozole is the most commonly used aromatase inhibitor for mild ovarian stimulation in ART...
April 7, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28389673/split-gated-point-contact-for-electrostatic-confinement-of-transport-in-mos2-h-bn-hybrid-structures
#12
Chithra H Sharma, Madhu Thalakulam
Electrostatically defined nanoscale devices on two-dimensional semiconductor heterostructures are the building blocks of various quantum electrical circuits. Owing to its atomically flat interfaces and the inherent two-dimensional nature, van der Waals heterostructures hold the advantage of large-scale uniformity, flexibility and portability over the conventional bulk semiconductor heterostructures. In this letter we show the operation of a split-gate defined point contact device on a MoS2/h-BN heterostructure, the first step towards realizing electrostatically gated quantum circuits on van der Waals semiconductors...
April 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28380779/monolithic-integration-of-ingaas-n-fets-and-lasers-on-ge-substrate
#13
Annie Kumar, Shuh-Ying Lee, Sachin Yadav, Kian Hua Tan, Wan Khai Loke, Satrio Wicaksono, Daosheng Li, Saeid Masudy Panah, Gengchiau Liang, Soon-Fatt Yoon, Xiao Gong, Dimitri Antoniadis, Yee-Chia Yeo
We report the first monolithic integration of InGaAs channel field-effect transistors with InGaAs/GaAs multiple quantum wells (MQWs) lasers on a common platform, achieving a milestone in the path of enabling low power and high speed opto-electronic integrated circuits (OEICs). The III-V layers used for realizing transistors and lasers were grown epitaxially on the Ge substrate using molecular beam epitaxy (MBE). A Si-CMOS compatible process was developed to realize InGaAs n-FETs with subthreshold swing SS of 93 mV/decade, I<sub>ON</sub>/I<sub>OFF</sub> ratio of more than 4 orders of magnitude with very low off-state leakage current, and a peak effective mobility of more than 2000 cm<sup>2</sup>/V·s...
March 6, 2017: Optics Express
https://www.readbyqxmd.com/read/28378017/room-temperature-multiplexed-gas-sensing-using-chemical-sensitive-3-5-nm-thin-silicon-transistors
#14
Hossain Mohammad Fahad, Hiroshi Shiraki, Matin Amani, Chuchu Zhang, Vivek Srinivas Hebbar, Wei Gao, Hiroki Ota, Mark Hettick, Daisuke Kiriya, Yu-Ze Chen, Yu-Lun Chueh, Ali Javey
There is great interest in developing a low-power gas sensing technology that can sensitively and selectively quantify the chemical composition of a target atmosphere. Nanomaterials have emerged as extremely promising candidates for this technology due to their inherent low-dimensional nature and high surface-to-volume ratio. Among these, nanoscale silicon is of great interest because pristine silicon is largely inert on its own in the context of gas sensing, unless functionalized with an appropriate gas-sensitive material...
March 2017: Science Advances
https://www.readbyqxmd.com/read/28374681/a-reliable-and-controllable-graphene-doping-method-compatible-with-current-cmos-technology-and-the-demonstration-of-its-device-applications
#15
Seonyeong Kim, Somyeong Shin, Taekwang Kim, Hyewon Du, Minho Song, Ki Soo Kim, Seungmin Cho, Sang Wook Lee, Sunae Seo
The modulation of charge carrier concentration allows us to tune the Fermi level (E F) of graphene thanks to the low electronic density of states near the E F. The introduced metal oxide thin films as well as the modified transfer process can elaborately maneuver the amounts of charge carrier concentration in graphene. The self-encapsulation provides a solution to overcome the stability issues of metal oxide hole dopants. We have manipulated systematic graphene p-n junction structures for electronic or photonic application-compatible doping methods with current semiconducting process technology...
April 28, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28371784/a-low-power-wide-dynamic-range-current-readout-circuit-for-ion-sensitive-fet-sensors
#16
Hyunwoo Son, Hwasuk Cho, Jahyun Koo, Youngwoo Ji, Byungsub Kim, Hong-June Park, Jae-Yoon Sim
This paper presents an amplifier-less and digital-intensive current-to-digital converter for ion-sensitive FET sensors. Capacitance on the input node is utilized as a residue accumulator, and a clocked comparator is followed for quantization. Without any continuous-time feedback circuit, the converter performs a first-order noise shaping of the quantization error. In order to minimize static power consumption, the proposed circuit employs a single-ended current-steering digital-to-analog converter which flows only the same current as the input...
March 30, 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28371305/flexible-nonvolatile-transistor-memory-with-solution-processed-transition-metal-dichalcogenides
#17
Richard Hahnkee Kim, Jinseong Lee, Kang Lib Kim, Suk Man Cho, Dong Ha Kim, Cheolmin Park
Nonvolatile field-effect transistor (FET) memories containing transition metal dichalcogenide (TMD) nanosheets have been recently developed with great interest by utilizing some of the intriguing photoelectronic properties of TMDs. The TMD nanosheets are, however, employed as semiconducting channels in most of the memories, and only a few works address their function as floating gates. Here, a floating-gate organic-FET memory with an all-in-one floating-gate/tunneling layer of the solution-processed TMD nanosheets is demonstrated...
March 30, 2017: Small
https://www.readbyqxmd.com/read/28370566/high-mobility-2d-palladium-diselenide-field-effect-transistors-with-tunable-ambipolar-characteristics
#18
Wai Leong Chow, Peng Yu, Fucai Liu, Jinhua Hong, Xingli Wang, Qingsheng Zeng, Chuang-Han Hsu, Chao Zhu, Jiadong Zhou, Xiaowei Wang, Juan Xia, Jiaxu Yan, Yu Chen, Di Wu, Ting Yu, Zexiang Shen, Hsin Lin, Chuanhong Jin, Beng Kang Tay, Zheng Liu
Due to the intriguing optical and electronic properties, 2D materials have attracted a lot of interest for the electronic and optoelectronic applications. Identifying new promising 2D materials will be rewarding toward the development of next generation 2D electronics. Here, palladium diselenide (PdSe2 ), a noble-transition metal dichalcogenide (TMDC), is introduced as a promising high mobility 2D material into the fast growing 2D community. Field-effect transistors (FETs) based on ultrathin PdSe2 show intrinsic ambipolar characteristic...
April 3, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28362635/carbon-nanotube-for-radio-frequency-electronics
#19
Zhong Donglai, Zhiyong Zhang, Lian-Mao Peng
Carbon nanotube (CNT) is considered as a promising material for radio frequency (RF) applications owing to its high carrier mobility and saturated drift velocity, as well as ultra-small intrinsic gate capacitance. Here we review the progress on CNT-based devices and integrated circuits for RF applications, including theoretical projection of RF performance of CNT-based devices, preparation of CNT materials, fabrication, optimization of RF field-effect transistors (FETs) structures, ambipolar FET based RF applications, and outline the challenges and prospective of CNT-based RF applications...
March 31, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28360001/assessment-of-urban-stream-sediment-pollutants-entering-estuaries-using-chemical-analysis-and-multiple-bioassays-to-characterise-biological-activities
#20
Svenja Boehler, Ruben Strecker, Patrick Heinrich, Erik Prochazka, Grant L Northcott, James M Ataria, Frederic D L Leusch, Thomas Braunbeck, Louis A Tremblay
Stormwater contaminants are a major source of often neglected environmental stressors because of the emphasis placed on the management of municipal and industrial wastewaters. Stormwater-derived pollutants in sediments from two New Zealand estuaries was characterised by analytical chemistry and bioassays. Contaminants were extracted from sediment using accelerated solvent extraction (ASE), recovered and concentrated by solid phase extraction (SPE), and analysed for polycyclic aromatic hydrocarbons (PAHs), selected metals, and musk fragrances...
March 27, 2017: Science of the Total Environment
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