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https://www.readbyqxmd.com/read/29149711/enantiomeric-characterization-of-herbicide-lactofen-enantioseparation-absolute-configuration-assignment-and-enantioselective-activity-and-toxicity
#1
Jingqian Xie, Lu Zhao, Kai Liu, Fangjie Guo, Zunwei Chen, Weiping Liu
Chiral herbicides consist of two or more enantiomers, which usually differ in their biological properties and behave enantioselectively in biochemical process. Scant studies have been published in the past decades to characterize the enantiomers of herbicide lactofen. In this study, a laboratory method was developed to prepare the lactofen enantiomers using normal phase high performance liquid chromatography with an AD-H column, and μg level production yield was achieved in a single run. The two separated enantiomers had purity of ≫99%, with their absolute configurations assigned by experimental and calculated electronic and vibrational circular dichroism...
October 31, 2017: Chemosphere
https://www.readbyqxmd.com/read/29149233/lighting-up-long-range-charge-transfer-states-by-a-localized-plasmonic-field
#2
Zhen Xie, Sai Duan, Chuan-Kui Wang, Yi Luo
The long-range charge-transfer states in a donor-acceptor system exhibit well separated electron-hole pairs, but are often difficult to achieve by optical means owing to a very small overlap between the wave functions of the donor and acceptor. We have found that the introduction of a spatially confined plasmon can enhance the transition probability to the long-range charge-transfer states as it can effectively break the intrinsic symmetry selection rule imposed on the system. Meanwhile, the intensity borrowed from local excitations could also be selectively promoted, allowing the manipulation of the excited quantum states...
November 17, 2017: Nanoscale
https://www.readbyqxmd.com/read/29148354/case-managers-for-high-risk-high-cost-patients-as-agents-and-street-level-bureaucrats
#3
Jeffrey Swanson, William G Weissert
Case management programs often designate a nurse or social worker to take responsibility for guiding care when patients are expected to be expensive or risk a major decline. We hypothesized that though an intuitively appealing idea, careful program design and faithful implementation are essential if case management programs are to succeed. We employed two theory perspectives, principal-agent framework and street-level bureaucratic theory to describe the relationship between program designers (principals) and case managers (agents/street-level bureaucrats) to review 65 case management studies...
August 1, 2017: Medical Care Research and Review: MCRR
https://www.readbyqxmd.com/read/29147963/inappropriate-anticholinergic-drugs-prescriptions-in-older-patients-analysing-a-hospital-database
#4
Laurie Ferret, Gregoire Ficheur, Emeline Delaviez, Michel Luyckx, Sophie Quenton, Regis Beuscart, Emmanuel Chazard, Jean-Baptiste Beuscart
Background Although many anticholinergics are inappropriate in older patients, the prescription of these drugs in a hospital setting has not been extensively studied. Objective To describe prescriptions of anticholinergic drugs in terms of frequency, at risk situations and constipation in hospitalized, older adults. Setting Using a database from a French general hospital (period 2009-2013), we extracted information on 14,090 hospital stays by patients aged 75 and over. Methods Anticholinergic drug prescriptions were automatically detected, with a focus on prescriptions in three well-known at-risk situations: falls, dementia, and benign prostatic hyperplasia...
November 17, 2017: International Journal of Clinical Pharmacy
https://www.readbyqxmd.com/read/29146981/fast-forwarding-of-hamiltonians-and-exponentially-precise-measurements
#5
Yosi Atia, Dorit Aharonov
The time-energy uncertainty relation (TEUR) [Formula: see text] holds if the Hamiltonian is completely unknown, but can be violated otherwise; here we initiate a rigorous study describing when and to what extent such violations can occur. To this end, we propose a computational version of the TEUR (cTEUR), in which Δt is replaced by the computational complexity of simulating the measurement. cTEUR violations are proved to occur if and only if the Hamiltonian can be fast forwarded (FF), namely, simulated for time t with complexity significantly smaller than t...
November 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/29145817/family-context-and-individual-situation-of-teens-before-during-and-after-pregnancy-in-mexico-city
#6
Reyna Sámano, Hugo Martínez-Rojano, David Robichaux, Ana Lilia Rodríguez-Ventura, Bernarda Sánchez-Jiménez, Maria de la Luz Hoyuela, Estela Godínez, Selene Segovia
BACKGROUND: In the last 20 years, adolescent pregnancy has become one of the most critical problems affecting women in Latin America and the Caribbean. METHODS: This qualitative study was based on in-depth interviews with 29 teen mothers. All of the pregnant teens were from low- to lower-middle-class social strata in the Mexico City metropolitan area. The family (living with the girl) and the individual context of pregnant teens were analysed on the basis of data from at least three interviews: during pregnancy and at approximately 6 and 24 months following delivery...
November 16, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/29142830/parathyroid-hormone-and-serum-calcium-levels-measurements-as-predictors-of-postoperative-hypocalcemia-in-total-thyroidectomy
#7
Mohammed Algarni, Rajab Alzahrani, Gianlorenzo Dionigi, Al-Hakami Hadi, Haia AlSubayea
Background: The rules of quantitative measures such as parathyroid hormone (PTH) levels in the first hours following total thyroidectomy have since been validated repeatedly. Such measures play an integral rule in identifying patients at significant risk for hypocalcaemia and have allowed for earlier supplementation of these patients with calcium with or without vitamin D. Methods: A retrospective analysis was conducted of 40 consecutive patients with well differentiated thyroid cancer (WDTC) who underwent total thyroidectomy without central neck dissection (CND) as an initial surgery and no comorbidity at King Abdulaziz Medical City (National Guard hospital), between July 2011 and July 2012...
October 2017: Gland Surgery
https://www.readbyqxmd.com/read/29142742/supporting-breast-cancer-decisions-using-formalized-guidelines-and-experts-decision-patterns-initial-prototype-and-evaluation
#8
Dennis Andrzejewski, Rüdiger Breitschwerdt, Michael Fellmann, Eberhard Beck
Transparent decisions and its documentation of breast cancer patients' therapy are getting more important especially since modern therapeutic approaches favor personalized forms of treatment. The medical decisions for a treatment are very complex, because there are rules and different options for each patient. To support the decision process, we analyzed the current decision rules and implemented them in a prototype of a rule-based expert system. Thus, this system shall support the quality assurance regarding transparent documentation of individualized therapeutic decisions...
December 2017: Health Information Science and Systems
https://www.readbyqxmd.com/read/29142427/cinnamaldehyde-cinnamic-acid-and-cinnamyl-alcohol-the-bioactives-of-cinnamomum-cassia-exhibit-hdac8-inhibitory-activity-an-in-vitro-and-in-silico-study
#9
Mangesh Patil, Amit S Choudhari, Savita Pandita, Md Ataul Islam, Prerna Raina, Ruchika Kaul-Ghanekar
Background: The altered expression of histone deacetylase family member 8 (HDAC8) has been found to be linked with various cancers, thereby making its selective inhibition a potential strategy in cancer therapy. Recently, plant secondary metabolites, particularly phenolic compounds, have been shown to possess HDAC inhibitory activity. Objective: In the present work, we have evaluated the potential of cinnamaldehyde (CAL), cinnamic acid (CA), and cinnamyl alcohol (CALC) (bioactives of Cinnamomum) as well as aqueous cinnamon extract (ACE), to inhibit HDAC8 activity in vitro and in silico...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29142314/magnetoresistance-and-robust-resistivity-plateau-in-moas2
#10
Jialu Wang, Lin Li, Wei You, Tingting Wang, Chao Cao, Jianhui Dai, Yuke Li
We have grown the MoAs2 single crystal which crystallizes in a monoclinic structure with C2/m space group. Transport measurements show that MoAs2 displays a metallic behavior at zero field and undergoes a metal-to-semiconductor crossover at low temperatures when the applied magnetic field is over 5 T. A robust resistivity plateau appears below 18 K and persists for the field up to 9 T. A large positive magnetoresistance (MR), reaching about 2600% at 2 K and 9 T, is observed when the field is perpendicular to the current...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29141603/detect-i-detect-ii-a-study-protocol-for-a-prospective-multicentre-observational-study-to-validate-the-uromark-assay-for-the-detection-of-bladder-cancer-from-urinary-cells
#11
Wei Shen Tan, Andrew Feber, Liqin Dong, Rachael Sarpong, Sheida Rezaee, Simon Rodney, Pramit Khetrapal, Patricia de Winter, Frelyn Ocampo, Rumana Jalil, Norman R Williams, Chris Brew-Graves, John D Kelly
BACKGROUND: Haematuria is a common finding in general practice which requires visual inspection of the bladder by cystoscopy as well as upper tract imaging. In addition, patients with non-muscle invasive bladder cancer (NMIBC) often require surveillance cystoscopy as often as three monthly depending on disease risk. However, cystoscopy is an invasive procedure which is uncomfortable, requires hospital attendance and is associated with a risk of urinary tract infection. We have developed the UroMark assay, which can detect 150 methylation specific alteration specific to bladder cancer using DNA from urinary sediment cells...
November 15, 2017: BMC Cancer
https://www.readbyqxmd.com/read/29139248/-post-marketing-safety-surveillance-of-diemailing-kudiezi-injection-real-world-study-in-30-233-cases
#12
Xing Liao, Dan-Dan Yu, Yan-Ming Xie, Yun-Ling Zhang, Yan He, Yin Zhang, Yan Liu, Dan-Hui Yi, Yong-Yan Wang
This study was aimed to obtain the incidence of adverse drug reaction (ADR) of Diemailing Kudiezi injection, explore its characteristics, related risk factors and application in real world. A prospective single cohort study was conducted from 25 hospitals (including Chinese medicine hospitals and Western medicine hospitals) for 4 years. 30 233 consecutive inpatients using Diemailing Kudiezi injection were observed. Their general information was analyzed by using statistic frequency description. Association rules were used to analyze the correlation between comorbidities or drug combinations; the influential factors for ADRs were initially screened by using cross contingency method and Chi-square test, and then Group LASSAO method was used for further analysis...
August 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29138087/beyond-modularity-fine-scale-mechanisms-and-rules-for-brain-network-reconfiguration
#13
Ankit N Khambhati, Marcelo G Mattar, Nicholas F Wymbs, Scott T Grafton, Danielle S Bassett
The human brain is in constant flux, as distinct areas engage in transient communication to support basic behaviors as well as complex cognition. The collection of interactions between cortical and subcortical areas forms a functional brain network whose topology evolves with time. Despite the nontrivial dynamics that are germane to this networked system, experimental evidence demonstrates that functional interactions organize into putative brain systems that facilitate different facets of cognitive computation...
November 11, 2017: NeuroImage
https://www.readbyqxmd.com/read/29137831/monitour-tracking-global-routes-of-electronic-waste
#14
David Lee, Dietmar Offenhuber, Fábio Duarte, Assaf Biderman, Carlo Ratti
Many nations seek to control or prevent the inflow of waste electronic and electrical equipment, but such flows are difficult to track due to undocumented, often illegal global trade in e-waste. We apply wireless GPS location trackers to this problem, detecting potential cases of non-compliant recycling operations in the United States as well as the global trajectories of exported e-waste. By planting hidden trackers inside discarded computer monitors and printers, we tracked dozens of devices being sent overseas to various ports in Asia, flows likely unreported in official trade data...
November 11, 2017: Waste Management
https://www.readbyqxmd.com/read/29137798/experimental-study-on-viscosity-reduction-for-residual-oil-by-ultrasonic
#15
Xintong Huang, Cuihong Zhou, Quanyu Suo, Lanting Zhang, Shihan Wang
Because of characteristics of large density, high viscosity and poor mobility, the processing and transportation of residual oil are difficult and challenging, viscosity reduction of residual oil is of great significance. In this paper, the effects of different placement forms of ultrasonic transducers on the sound pressure distribution of ultrasonic inside a cubic container have been simulated, the characteristics of oil bath heating and ultrasonic viscosity reduction were compared, viscosity reduction rule of residual oil was experimentally analyzed by utilizing Response Surface Method under conditions of changing ultrasonic exposure time, power and action mode, the mechanism of viscosity reduction was studied by applying Fourier transform infrared spectrometer, the viscosity retentivity experiment was carried out at last...
March 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29135770/an-electronic-health-record-based-algorithm-to-ascertain-the-date-of-second-breast-cancer-events
#16
Jessica Chubak, Tracy Onega, Weiwei Zhu, Diana S M Buist, Rebecca A Hubbard
OBJECTIVES: Studies of cancer recurrences and second primary tumors require information on outcome dates. Little is known about how well electronic health record-based algorithms can identify dates or how errors in dates can bias analyses. RESEARCH DESIGN: We assessed rule-based and model-fitting approaches to assign event dates using a previously published electronic health record-based algorithm for second breast cancer events (SBCE). We conducted a simulation study to assess bias due to date assignment errors in time-to-event analyses...
December 2017: Medical Care
https://www.readbyqxmd.com/read/29134243/-implants-for-genital-prolapse-pro-mesh-surgery
#17
REVIEW
J Neymeyer, D-E Moldovan, K Kornienko, K Miller, A Weichert
There has been an overall increase in pelvic organ prolapse due to demographic changes (increased life expectancy). Increasing sociocultural demands of women require treatments that are more effective with methods that are more successful. In the treatment of pelvic floor insufficiency and uterovaginal prolapse, pelvic floor reconstructions with mesh implants have proven to be superior to conventional methods such as the classic colporrhaphy, reconstructions with biomaterial, and native tissue repair in appropriately selected patients and when applying exact operation techniques, especially because of good long-term results and low recurrence rates...
November 13, 2017: Der Urologe. Ausg. A
https://www.readbyqxmd.com/read/29133539/validation-of-the-ottawa-subarachnoid-hemorrhage-rule-in-patients-with-acute-headache
#18
Jeffrey J Perry, Marco L A Sivilotti, Jane Sutherland, Corinne M Hohl, Marcel Émond, Lisa A Calder, Christian Vaillancourt, Venkatesh Thirganasambandamoorthy, Howard Lesiuk, George A Wells, Ian G Stiell
BACKGROUND: We previously derived the Ottawa Subarachnoid Hemorrhage Rule to identify subarachnoid hemorrhage (SAH) in patients with acute headache. Our objective was to validate the rule in a new cohort of consecutive patients who visited an emergency department. METHODS: We conducted a multicentre prospective cohort study at 6 university-affiliated tertiary-care hospital emergency departments in Canada from January 2010 to January 2014. We included alert, neurologically intact adult patients with a headache peaking within 1 hour of onset...
November 13, 2017: CMAJ: Canadian Medical Association Journal, Journal de L'Association Medicale Canadienne
https://www.readbyqxmd.com/read/29132934/the-evolution-of-pathogen-virulence-effects-of-transitions-between-host-types
#19
Paul David Williams, Stephanie Jill Kamel
Much of evolutionary epidemiology theory is derived from a perspective in which all hosts, and all parasites, are epidemiologically equivalent. This stands in contrast to the well-documented existence of the numerous processes generating heterogeneity among hosts and parasites that can profoundly influence evolutionary/epidemiological dynamics. Age-related immunological changes, inequities in nutritional status, and interactions between parasites via coinfection are just a few of the many factors that generate heterogeneity among hosts in the ways they express susceptibility to, and respond to infection by, a focal pathogen...
November 10, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/29132486/opticard-an-inexpensive-and-portable-method-of-bedside-direct-fundoscopy
#20
Muhammad Tauseef Omer, Efra Abbas
The use of fundoscopy to observe and grade retinal changes in diabetes and hypertension is well known. Fundus screening is recommended prior to discharge of every neonate from the neonatal unit to rule out congenital cataract. However, the traditional direct fundoscopes are expensive and, therefore, not available in majority of the hospitals in developing countries. Also, fundoscopy needs special expertise to use the device. OptiCard is an inexpensive new method of direct fundoscopy that allows visualization of retina and optic disc with or without the use of cell phone...
November 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
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