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https://www.readbyqxmd.com/read/28351121/probing-the-quantum-states-of-a-single-atom-transistor-at-microwave-frequencies
#1
Giuseppe Carlo Tettamanzi, Samuel James Hile, Matthew Gregory House, Martin Fuechsle, Sven Rogge, Michelle Y Simmons
The ability to apply gigahertz frequencies to control the quantum state of a single P atom is an essential requirement for the fast gate pulsing needed for qubit control in donor-based silicon quantum computation. Here, we demonstrate this with nanosecond accuracy in an all epitaxial single atom transistor by applying excitation signals at frequencies up to ≈13 GHz to heavily phosphorus-doped silicon leads. These measurements allow the differentiation between the excited states of the single atom and the density of states in the one-dimensional leads...
March 28, 2017: ACS Nano
https://www.readbyqxmd.com/read/28351090/an-increase-in-normal-sua-level-within-the-normal-range-predicts-risk-of-metabolic-syndrome-especially-in-women-a-cross-sectional-study
#2
Qian Li, Jing Lu, Xi Cao, Ting-Ting Shi, Jian-Ping Feng, Jin-Kui Yang
This study was aimed to evaluate the relationship between normal serum uric acid (SUA) level and metabolic syndrome (MetS) risk. This cross-sectional study involved 1914 subjects with MetS and 3 659 healthy controls aged 18-79 years. All participants filled out questionnaires and underwent physical examination and blood sample collection for biochemical examination. Demographic and clinical characteristics data were analyzed by t-test or chi-squared test. Normal SUA levels were divided into quartiles. Associations between quartiles of normal SUA level and the risk of MetS were explored using logistic regression analysis and receiver operating characteristic (ROC) curve analysis...
March 28, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28351088/premature-progesterone-rise-positively-correlates-with-clinical-pregnancy-rate-in-in-vitro-fertilization-ivf-and-intracytoplasmic-sperm-injection-icsi-patients-with-good-ovarian-response
#3
Na Cui, Jie Zhang, Yueming Xu, Lei Jiang, Aimin Yang, Guimin Hao
Infertility affects millions of couples worldwide resulting in distress and depression. In the past several decades, in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI) have been developed with high efficiency and success rate. The possible effects of gonadotropin administration on follicular metabolism have been discussed but the outcomes remain controversial. The aim of this study was to identify whether serum progesterone on the day of human chorionic gonadotropin (hCG) administration and the ratio of serum progesterone and the number of oocyte retrieved (P/O) had a predictive role for the outcomes of IVF/ICSI...
March 28, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28351086/independent-risk-factors-predicting-central-lymph-node-metastasis-in-papillary-thyroid-microcarcinoma
#4
Xiaolong Yu, Xuejia Song, Wenhai Sun, Shihua Zhao, Jiajun Zhao, Yan-Gang Wang
The incidence of papillary thyroid microcarcinoma (PTMC) has risen rapidly in recent years, and PTMC patients with central lymph node metastasis (CLNM) usually have poor prognosis. Independent risk factors predicting CLNM in PTMC have not been well understood. The aim of our study was to identify useful clinicopathological risk factors predicting CLNM in PTMC patients. This was a retrospective study of 917 patients with PTMC treated with surgery from January 2014 to December 2015 in our hospital. The relationship between clinicopathological factors and CLNM was analyzed to identify those factors predicting CLNM in PTMC...
March 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28351070/does-resection-of-the-posterior-longitudinal-ligament-impact-the-incidence-of-c5-palsy-after-cervical-corpectomy-procedures-a-review-of-459-consecutive-cases
#5
Ahmad Nassr, Ilyas S Aleem, Jason C Eck, Barrett Woods, Ravi K Ponnappan, William F Donaldson, James D Kang
STUDY DESIGN: Retrospective review. OBJECTIVE: To evaluate key risk factors for the development of C5 palsy after cervical corpectomy, including resection of the posterior longitudinal ligament (PLL). SUMMARY OF BACKGROUND DATA: Postoperative C5 palsy is a well-known complication after cervical spine surgery. It is unknown whether resection of the PLL affects the incidence of C5 palsy. METHODS: We performed a retrospective review of 459 consecutive patients undergoing anterior cervical corpectomies over a 15-year period...
April 1, 2017: Spine
https://www.readbyqxmd.com/read/28351059/sonographic-markers-in-the-prediction-of-fetal-complex-gastroschisis
#6
Walkyria S Andrade, Maria L Brizot, Agatha S Rodrigues, Ana C Tannuri, Vera L Krebs, Estela N Nishie, Rossana P V Francisco, Marcelo Zugaib
OBJECTIVE: To investigate the ultrasound (US) markers predictive of complex gastroschisis (CG), mortality, and morbidity in fetuses with gastroschisis. MATERIALS AND METHODS: This was a retrospective cohort study of 186 pregnancies with isolated fetal gastroschisis. Eight US markers were analyzed. The predictions and associations of US markers with CG, mortality, and morbidity were assessed. Combinations of US markers predictive of CG were investigated. RESULTS: Extra-abdominal bowel dilatation (EABD), intra-abdominal bowel dilatation (IABD), and polyhydramnios were predictive of CG...
March 29, 2017: Fetal Diagnosis and Therapy
https://www.readbyqxmd.com/read/28351036/hypoxia-induces-multidrug-resistance-via-enhancement-of-epidermal-growth-factor-like-domain-7-expression-in-non-small-lung-cancer-cells
#7
Xiaochun Shen, Qiaoming Zhi, Yunliang Wang, Zhi Li, Jin Zhou, Jianan Huang
Chemotherapy is widely used in non-small cell lung cancer (NSCLC) treatment, yet multidrug resistance (MDR) is a major chemotherapeutic obstacle in both resectable and advanced NSCLC. Epidermal growth factor-like domain 7 (EGFL7), also known as vascular endothelial stain, is an endothelial cell-derived secreted factor that regulates vascular tube formulation. The aim of this study was to investigate the potential relationships between EGFL7 and MDR in NSCLC cells. We first obtained the CDDP-based MDR phenotype cell line A549/CDDP by repeated exposure to a proper concentration of CDDP (cisplatin) from original A549 cells...
March 29, 2017: Chemotherapy
https://www.readbyqxmd.com/read/28351027/re-thinking-elective-single-embryo-transfer-increased-risk-of-monochorionic-twinning-a-systematic-review
#8
Margaret Dziadosz, Mark I Evans
BACKGROUND/OBJECTIVES: Multiple pregnancies have tripled in the United States over the past 3 decades. Attributed to increasing maternal age at delivery but more so assisted reproductive technological advances, an effort has been made to decrease twinning through elective single embryo transfer. We sought to review and evaluate risks of monochorionic twinning as a predictable consequence of increasing utilization of elective single embryo transfer on perinatal outcomes. Primary outcomes included twinning rates, fetal anomalies, growth, preterm birth, and mortality...
March 29, 2017: Fetal Diagnosis and Therapy
https://www.readbyqxmd.com/read/28351024/evaluating-the-prognostic-value-of-microrna-203-in-solid-tumors-based-on-a-meta-analysis-and-the-cancer-genome-atlas-tcga-datasets
#9
Yingjie Shao, Wendong Gu, Zhonghua Ning, Xing Song, Honglei Pei, Jingting Jiang
BACKGROUND: It has been reported that miR-203 expression was aberrant in various types of cancers, and it could be used as a prognostic biomarker. Therefore, in this study, we aimed to evaluate the prognostic value of miR-203 expression in solid tumors by using meta-analysis and The Cancer Genome Atlas (TCGA) datasets. METHODS: By doing a literature research in PubMed, Embase and the Cochrane Library (last update by December 2016), we were able to identify the studies assessing the prognostic role of miR-203 in various tumors...
March 24, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28351021/effects-of-handedness-saccadic-bilateral-eye-movements-on-the-specificity-of-past-autobiographical-memory-episodic-future-thinking
#10
Andrew Parker, Adam Parkin, Neil Dagnall
The present research investigated the effects of personal handedness and saccadic eye movements on the specificity of past autobiographical memory and episodic future thinking. Handedness and saccadic eye movements have been hypothesised to share a common functional basis in that both influence cognition through hemispheric interaction. The technique used to elicit autobiographical memory and episodic future thought involved a cued sentence completion procedure that allowed for the production of memories spanning the highly specific to the very general...
March 25, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28351002/significance-of-lipoprotein-a-levels-in-familial-hypercholesterolemia-and-coronary-artery-disease
#11
Sha Li, Na-Qiong Wu, Cheng-Gang Zhu, Yan Zhang, Yuan-Lin Guo, Ying Gao, Xiao-Lin Li, Ping Qing, Chuan-Jue Cui, Rui-Xia Xu, Jing Sun, Geng Liu, Qian Dong, Jian-Jun Li
BACKGROUND AND AIMS: Patients with familial hypercholesterolemia (FH) are often characterized by premature coronary artery disease (CAD) with heterogeneity at onset. The aim of the present study was to investigate the associations of lipoprotein (a) [Lp(a)] with the FH phenotype, genotype and roles of Lp(a) in determining CAD risk among patients with and without FH. METHODS: We enrolled 8050 patients undergoing coronary angiography, from our Lipid clinic. Clinical FH was diagnosed using the Dutch Lipid Clinic Network criteria...
March 18, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28351001/sample-size-bias-in-retrospective-estimates-of-average-duration
#12
Andrew R Smith, Shanon Rule, Paul C Price
People often estimate the average duration of several events (e.g., on average, how long does it take to drive from one's home to his or her office). While there is a great deal of research investigating estimates of duration for a single event, few studies have examined estimates when people must average across numerous stimuli or events. The current studies were designed to fill this gap by examining how people's estimates of average duration were influenced by the number of stimuli being averaged (i.e., the sample size)...
March 25, 2017: Acta Psychologica
https://www.readbyqxmd.com/read/28350994/the-reduction-of-chlorella-vulgaris-concentrations-through-uv-c-radiation-treatments-a-nature-based-solution-nbs
#13
Erika S Chen, Thomas B Bridgeman
Algal blooms have become a pressing issue in inland freshwater systems on local and global scales. A plausible approach to reducing algae without the use of chemical/biological agents is through the use of UV-C radiation from lamps potentially powered by in situ solar panels to eliminate algae. Yet, the quantitative scientific base has not been established. Our objective is to conduct a controlled experiment to quantify the effectiveness of UV-C radiation on the reduction of Chlorella vulgaris, a common algal species in the Great Lakes region...
March 25, 2017: Environmental Research
https://www.readbyqxmd.com/read/28350971/early-discharge-after-total-thyroidectomy-a-retrospective-feasibility-study
#14
F Tartaglia, A Giuliani, S Sorrenti, L Tromba, S Carbotta, A Maturo, G Carbotta, L De Anna, R Merola, G Livadoti, F Pelle, S Ulisse
AIM: The continued hospitalization after total thyroidectomy is often due to the onset of hypocalcemic complications more than 24 hours after surgery. So it would be important to predict which patients will not develop the hypocalcemic complication to discharge them early. This was the aim of our study. PATIENTS AND METHODS: Our retrospective study was conducted on 327 consecutive thyroidectomized patients, operated on for benign and malignant diseases. We evaluated the values of preoperative serum calcium levels (Cal0) and of the first postoperative day (Cal1) and two new variables were calculated (dCal and dCaln)...
November 2016: Il Giornale di Chirurgia
https://www.readbyqxmd.com/read/28350970/mannheim-peritonitis-index-mpi-and-elderly-population-prognostic-evaluation-in-acute-secondary-peritonitis
#15
G Salamone, L Licari, N Falco, G Augello, R Tutino, S Campanella, G Guercio, G Gulotta
INTRODUCTION: Acute Secondary Peritonitis due to abdominal visceral perforation is characterized by high mortality and morbidity risk. Risk stratification allows prognosis prediction to adopt the best surgical treatment and clinical care support therapy. In Western countries elderly people represent a significant percentage of population Aim. Evaluation of Mannheim Peritonitis Index (MPI) and consideration upon old people. PATIENTS AND METHODS: Retrospective study on 104 patients admitted and operated for "Acute Secondary Peritonitis due to visceral perforation"...
November 2016: Il Giornale di Chirurgia
https://www.readbyqxmd.com/read/28350960/enhanced-stability-of-magnetic-skyrmion-lattice-phase-under-a-tilted-magnetic-field-in-two-dimensional-chiral-magnet
#16
Chao Wang, Haifeng Du, Xuebing Zhao, Chiming Jin, Mingliang Tian, Yuheng Zhang, Renchao Che
Magnetic skyrmion is a topologically stable vortex-like spin texture that offers great promise as information carriers for future spintronic devices. In a two-dimensional chiral magnet, it was generally considered that a tilted magnetic field is harmful to its formation and stability. Here we investigated the angular dependent stability of magnetic skyrmions in FeGe nanosheets by using high-resolution Lorentz transmission electron microscopy (Lorentz TEM). Besides the theoretically predicted destruction of skyrmion lattice state by an oblique magnetic field as temperature close to its magnetic Curie temperature Tc~278 K, we also observed an unexpected reentry-like phenomenon at the moderate temperatures near the border between conical and skyrmion phase,Tt~240 K...
March 28, 2017: Nano Letters
https://www.readbyqxmd.com/read/28350957/ion-diffusion-within-water-films-in-unsaturated-porous-media
#17
Tetsu K Tokunaga, Stefan Finsterle, Yongman Kim, Jiamin Wan, Antonio Lanzirotti, Matthew Newville
Diffusion is important in controlling local solute transport and reactions in unsaturated soils and geologic formations. Although it is commonly assumed that thinning of water films controls solute diffusion at low water contents, transport under these conditions is not well understood. We conducted experiments in quartz sands at low volumetric water contents (θ) to quantify ion diffusion within adsorbed films. At the lowest water contents, we employed fixed relative humidities to control water films at nm thicknesses...
March 28, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28350954/integrating-drug-s-mode-of-action-into-quantitative-structure-activity-relationships-for-improved-prediction-of-drug-induced-liver-injury
#18
Leihong Wu, Zhichao Liu, Scott S Auerbach, Ruili Huang, Minjun Chen, Kristin McEuen, Joshua Zhihua Xu, Hong Fang, Weida Tong
Drug-induced liver injury (DILI) is complex in mechanism. Different drugs could undergo different mechanisms but result in the same DILI type while the same drug could lead to different DILI types via different mechanisms. Therefore, predicting a drug's potential for DILI should take its underlying mechanisms into consideration. To achieve that, we constructed a novel approach by incorporating drug's Mode of Action (MOA) into Quantitative Structure-Activity Relationship (QSAR) modeling. This MOA-DILI approach was examined using a dataset of 333 drugs...
March 28, 2017: Journal of Chemical Information and Modeling
https://www.readbyqxmd.com/read/28350949/state-of-the-art-in-degenerative-cervical-myelopathy-an-update-on-current-clinical-evidence
#19
Jefferson R Wilson, Lindsay A Tetreault, Jun Kim, Mohammed F Shamji, James S Harrop, Thomas Mroz, Samuel Cho, Michael G Fehlings
Degenerative cervical myelopathy (DCM) is a common cause of spinal cord dysfunction that confronts clinicians on a daily basis. Research performed over the past few decades has provided improved insight into the diagnosis, evaluation, and treatment of this disorder. We aim to provide clinicians with an update regarding the state of the art in DCM, focusing on more recent research pertaining to pathophysiology, natural history, treatment, consideration of the minimally symptomatic patient, surgical outcome prediction, and outcome measurement...
March 1, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28350946/emerging-techniques-in-degenerative-thoracolumbar-surgery
#20
Theodore J Choma, Thomas E Mroz, Christina L Goldstein, Paul Arnold, Mohammed F Shamji
There continue to be incremental advances in thoracolumbar spine surgery techniques in attempts to achieve more predictable outcomes, minimize risk of complications, speed recovery, and minimize the costs of these interventions. This paper reviews recent literature with regard to emerging techniques of interest in the surgical treatment of lumbar spinal stenosis, fusion fixation and graft material, degenerative lumbar spondylolisthesis, and thoracolumbar deformity and sacroiliac joint degeneration. There continue to be advances in minimal access options in these areas, although robust outcome data are heterogeneous in its support...
March 1, 2017: Neurosurgery
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