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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/28351116/management-of-people-with-early-or-very-early-stage-hepatocellular-carcinoma-an-attempted-network-meta-analysis
#2
REVIEW
Avik Majumdar, Davide Roccarina, Douglas Thorburn, Brian R Davidson, Emmanuel Tsochatzis, Kurinchi Selvan Gurusamy
BACKGROUND: Hepatocellular carcinoma (primary liver cancer) is classified in many ways. The Barcelona Clinic Liver Cancer (BCLC) group staging classifies the cancer based on patient's life expectancy. People with very early- or early-stage hepatocellular carcinoma have single tumour or three tumours of maximum diameter of 3 cm or less, Child-Pugh status A to B, and performance status 0 (fully functional). Management of hepatocellular carcinoma is uncertain. OBJECTIVES: To assess the comparative benefits and harms of different interventions used in the treatment of early or very early hepatocellular carcinoma through a network meta-analysis and to generate rankings of the available interventions according to their safety and efficacy...
March 28, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28351102/driving-up-the-adenoma-detection-rate-is-it-time-to-make-a-u-turn
#3
Jonah Cohen, Mandeep S Sawhney
No abstract text is available yet for this article.
April 2017: Endoscopy
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
#4
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/28351071/neurologic-deficits-have-a-negative-impact-on-patient-related-outcomes-in-primary-presentation-adult-symptomatic-lumbar-scoliosis-surgical-treatment-at-one-year-follow-up
#5
Daniel G Kang, Christine Baldus, Steven D Glassman, Christopher I Shaffrey, Jon D Lurie, Keith H Bridwell
STUDY DESIGN: A retrospective analysis of prospective, multicenter National Institute of Health clinical trial. OBJECTIVE: The aim of this study was to assess the rate of neurologic complications and impact of new neurologic deficits on 1-year postoperative patient-reported outcomes (PROs). SUMMARY OF BACKGROUND DATA: There are limited studies evaluating the impact of new neurologic deficits on PROs following surgery for primary presentation adult lumbar scoliosis...
April 1, 2017: Spine
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
#6
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/28351066/bringing-rounds-back-to-the-patient-a-one-year-evaluation-of-the-chiefs-service-model-for-inpatient-teaching
#7
Nadia L Bennett, Judd D Flesch, Peter Cronholm, James B Reilly, Jack Ende
PURPOSE: The Chiefs' Service (CS), a structured approach to inpatient teaching rounds, focuses on resident education and patient-centered care without disrupting patient census sizes or admitting cycles. It has five key elements: morning huddles; bedside rounds; diagnostic "time-outs"; day-of-discharge rounds; and postdischarge follow-up rounds. The authors hypothesized the CS model would be well received by residents and considered more effective than more-traditional rounds. METHOD: The CS was implemented on Penn Presbyterian Medical Center's general medicine inpatient service using a quasi-experimental design...
April 2017: Academic Medicine: Journal of the Association of American Medical Colleges
https://www.readbyqxmd.com/read/28351060/blood-pressure-variability-in-obstructive-sleep-apnoea-data-from-4-randomised-controlled-cpap-withdrawal-trials
#8
Franziska Lettau, Esther I Schwarz, John R Stradling, Malcolm Kohler
BACKGROUND: Increased daytime blood pressure variability (BPV) is associated with cardiovascular risk. Preliminary data suggest that obstructive sleep apnoea (OSA) might contribute to increased daytime BPV. OBJECTIVE: The aim of this study was to evaluate the effect of continuous positive airway pressure (CPAP) therapy withdrawal on daytime BPV. METHODS: A total of 183 patients previously diagnosed with OSA and treated with CPAP were randomised to either continue or withdraw from CPAP within 4 trials...
March 29, 2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/28351055/comparison-of-the-induction-to-delivery-interval-in-terminations-of-pregnancy-with-or-without-dilapan-s%C3%A2
#9
Marie Vincienne, Olivia Anselem, Anne Gaelle Cordier, Camille Le Ray, Vassilis Tsatsaris, Alexandra Benachi, François Goffinet
OBJECTIVE: In France, terminations of pregnancy (TOP) for medical reasons beyond the second trimester use mifepristone and misoprostol. We sought to determine the effectiveness of Dilapan-S®, an osmotic cervical dilator, in shortening the induction-to-delivery interval (IDI). MATERIALS AND METHODS: This retrospective study of TOP in 2010-2012 compared the results from 2 hospitals with different TOP protocols starting at 16 weeks' gestation, one (164 women) with and one (106) without Dilapan-S®...
March 29, 2017: Fetal Diagnosis and Therapy
https://www.readbyqxmd.com/read/28351027/re-thinking-elective-single-embryo-transfer-increased-risk-of-monochorionic-twinning-a-systematic-review
#10
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/28351016/nano-enabled-paper-humidity-sensor-for-mobile-based-point-of-care-lung-function-monitoring
#11
Mitradip Bhattacharjee, Harshal B Nemade, Dipankar Bandyopadhyay
The frequency of breathing and peak flow rate of exhaled air are necessary parameters to detect chronic obstructive pulmonary diseases (COPDs) such as asthma, bronchitis, or pneumonia. We developed a lung function monitoring point-of-care-testing device (LFM-POCT) consisting of mouthpiece, paper-based humidity sensor, micro-heater, and real-time monitoring unit. Fabrication of a mouthpiece of optimal length ensured that the exhaled air was focused on the humidity-sensor. The resistive relative humidity sensor was developed using a filter paper coated with nanoparticles, which could easily follow the frequency and peak flow rate of the human breathing...
March 22, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28351015/optimization-for-zeolite-regeneration-and-nitrogen-removal-performance-of-a-hypochlorite-chloride-regenerant
#12
Wei Zhang, Zhen Zhou, Ying An, Silu Du, Danian Ruan, Chengyue Zhao, Ning Ren, Xiaoce Tian
Simultaneous zeolites regeneration and nitrogen removal were investigated by using a mixed solution of NaClO and NaCl (NaClO-NaCl solution), and effects of the regenerant on ammonium removal performance and textural properties of zeolites were analyzed by long-term adsorption and regeneration operations. Mixed NaClO-NaCl solution removed more NH4(+) exchanged on zeolites and converted more of them to nitrogen than using NaClO or NaCl solution alone. Response surface methodological analysis indicated that molar ratio of hypochlorite and nitrogen (ClO(-)/N), NaCl concentration and pH value all had significant effects on zeolites regeneration and NH4(+) conversion to nitrogen, and the optimum condition was obtained at ClO(-)/N of 1...
March 22, 2017: Chemosphere
https://www.readbyqxmd.com/read/28351006/variola-minor-in-coalfield-areas-of-england-and-wales-1921-34-geographical-determinants-of-a-national-smallpox-epidemic-that-spread-out-of-effective-control
#13
Matthew R Smallman-Raynor, Sarah Rafferty, Andrew D Cliff
This paper uses techniques of binary logistic regression to identify the spatial determinants of the last national epidemic of smallpox to spread in England and Wales, the variola minor epidemic of 1921-34. Adjusting for age and county-level variations in vaccination coverage in infancy, the analysis identifies a dose-response gradient with increasing odds of elevated smallpox rates in local government areas with (i) medium (odds ratio [OR] = 5.32, 95% Confidence Interval [95% CI] 1.96-14.41) and high (OR = 11...
March 23, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28351003/experimental-investigation-of-cognitive-and-affective-empathy-in-borderline-personality-disorder-effects-of-ambiguity-in-multimodal-social-information-processing
#14
Inga Niedtfeld
Borderline personality disorder (BPD) is characterized by affective instability and interpersonal problems. In the context of social interaction, impairments in empathy are proposed to result in inadequate social behavior. In contrast to findings of reduced cognitive empathy, some authors suggested enhanced emotional empathy in BPD. It was investigated whether ambiguity leads to decreased cognitive or emotional empathy in BPD. Thirty-four patients with BPD and thirty-two healthy controls were presented with video clips, which were presented through prosody, facial expression, and speech content...
March 23, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28350995/the-difference-in-association-between-aspirin-use-and-other-thrombocyte-aggregation-inhibitors-and-survival-in-patients-with-colorectal-cancer
#15
M A Frouws, E Rademaker, E Bastiaannet, M P P van Herk-Sukel, V E Lemmens, C J H Van de Velde, J E A Portielje, G J Liefers
BACKGROUND: Several studies have suggested that the association between aspirin and improved cancer survival is mediated through the mechanism of aspirin as thrombocyte aggregation inhibitors (TAI). The aim of this study was to provide epidemiological evidence for this mechanism assessing the association between overall survival and the use of aspirin and non-aspirin TAI in patients with colorectal cancer. METHODS: In this observational study, data from the Netherlands Comprehensive Cancer Organisation were linked to PHARMO Database Network...
March 25, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28350994/the-reduction-of-chlorella-vulgaris-concentrations-through-uv-c-radiation-treatments-a-nature-based-solution-nbs
#16
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/28350977/small-bowel-obstruction-caused-by-anisakis-and-meckel-s-diverticulum-a-rare-case
#17
G Carbotta, R Laforgia, Michele Milella, M G Sederino, M Minafra, F Fortarezza, D Piscitelli, N Palasciano
INTRODUCTION: Anisakiasis is a parasitic infection caused by the ingestion of raw fish contaminated by larval nematodes of Anisakis species. Intestinal or extraintestinal manifestations are rated to > 4% and >1% respectively. PRESENTATION OF CASE: A 61-year old patient was admitted to our General Surgical and Emergency Unit because of sudden abdominal pain, vomit and constipation. He had eaten raw fish 3 days before admission. Laboratory data showed high levels of WBC and PCR...
November 2016: Il Giornale di Chirurgia
https://www.readbyqxmd.com/read/28350972/open-sphincter-preserving-surgery-of-extraperitoneal-rectal-cancer-without-primary-stoma-and-fast-track-protocol
#18
G Pappalardo, S Coiro, F De Lucia, A Giannella, F Ruffolo, F M Frattaroli
AIM: Fast track protocol (FTP) showed to improve perioperative care. The study aims to evaluate the impact of the FTP in the open extraperitoneal rectal cancer (ERC) surgical treatment without a primary derivative stoma (DS) and the QoL in patients with or without a secondary DS. PATIENTS AND METHODS: 50 patients affected by ERC were enrolled and operated on with open low anterior resection without a primary DS. They were randomized in two groups: one was treated perioperativelly in the traditional way (group T), the other using a modif ed FTP (group FT)...
November 2016: Il Giornale di Chirurgia
https://www.readbyqxmd.com/read/28350971/early-discharge-after-total-thyroidectomy-a-retrospective-feasibility-study
#19
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
#20
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
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