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https://www.readbyqxmd.com/read/29036105/focus-engineering-based-on-analytical-formulae-for-tightly-focused-polarized-beams-with-arbitrary-geometric-configurations-of-linear-polarization
#1
Zhongsheng Man, Shenggui Fu, Gongxiang Wei
Highly confined electromagnetic fields with controllable intensity profiles and polarization orientations are greatly desired in many fields. In this paper, we report on the generation of highly confined fields through tightly focused locally linearly polarized beams. Using the Richards-Wolf vectorial diffraction method, we derive and build integrated analytical formulae for calculating the tightly focused field of polarized beams with arbitrary geometric configurations of linear polarization. Based on the analytical model, the focusing properties of four types of polarized light beams, i...
August 1, 2017: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/29036102/scattering-of-a-gaussian-beam-from-a-row-of-cylinders-with-rectangular-cross-section
#2
Jesús Daniel Valenzuela-Sau, Ramón Munguía-Arvayo, Sandra Gastélum-Acuña, Jorge Gaspar-Armenta, José Nápoles-Duarte, Raúl García-Llamas
The transverse magnetic Gaussian beam diffraction from a finite number, equally spaced and rectangular cross section dielectric cylinder row is studied. The infinitely long cylinders' axes are perpendicular to the beam's direction of propagation. The cylinder row, with dielectric constant εc=nc2, is treated as a periodic inhomogeneous film, with period ax and thickness wy, bounded by two semi-infinite homogeneous media. With this restriction, the method is valid only for square or rectangular cross section cylinders...
August 1, 2017: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/29035099/association-between-growth-differentiation-factor-15-and-left-ventricular-hypertrophy-in-hypertensive-patients-and-healthy-adults
#3
Huijuan Kou, Xin Jin, Dengfeng Gao, Rui Ma, Xin Dong, Jin Wei, Xin Wang
Growth differentiation factor 15 (GDF-15) as an independent biomarker of cardiovascular diseases merits further evaluation. We studied the association between plasma GDF-15 levels and left ventricular hypertrophy (LVH) in hypertensive patients and healthy adults. Hypertensive LVH measurements were performed via echocardiography and analyzed using the cube formula, and human GDF-15 together with interleukin-6 (IL-6) and matrix metalloproteinase-9 (MMP-9) concentrations were determined via enzyme-linked immunosorbent assay (ELISA)...
October 16, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/29034645/peripheral-neuropathy-in-multiple-sclerosis-an-electrophysiologic-study-in-iranian-patients
#4
Mohammad Reza Emad, Leila Zeinali, Alireza Nikseresht, Mahshid Naseri, Hajar Karimian
Multiple sclerosis (MS) is the most common cause of disability after trauma in young adults in Northern Hemisphere; it imposes a major burden on the affected young people. A significant association between MS and demyelinating peripheral neuropathy which might be due to common pathogenesis for the central and peripheral nerves demyelination has been reported in several studies. We aimed to assess if there is any peripheral nervous system involvement in a sample of Iranian MS population. Extensive nerve conduction studies (NCS) were conducted in 20 MS patients according to McDonald criteria, and 20 age and gender matched healthy appearing controls...
August 2017: Acta Medica Iranica
https://www.readbyqxmd.com/read/29032685/a-temperature-dependent-implicit-solvent-model-of-polyethylene-glycol-in-aqueous-solution
#5
Richard Chudoba, Jan Heyda, Joachim Dzubiella
A temperature (T)-dependent coarse-grained (CG) Hamiltonian of polyethylene glycol/oxide (PEG/PEO) in aqueous solution is reported to be used in implicit-solvent material models in a wide temperature (i.e., solvent quality) range. The T-dependent nonbonded CG interactions are derived from a combined "bottom-up" and "top-down" approach. The pair potentials calculated from atomistic replica-exchange molecular dynamics simulations in combination with the iterative Boltzmann inversion are post-refined by benchmarking to experimental data of the radius of gyration...
October 16, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/29027590/diagnostic-utility-of-combined-retinal-ganglion-cell-count-estimates-in-japanese-glaucoma-patients
#6
Mari Sakamoto, Sotaro Mori, Kaori Ueda, Azusa Akashi, Yukako Inoue, Takuji Kurimoto, Akiyasu Kanamori, Yuko Yamada, Makoto Nakamura
PURPOSE: To assess the combined estimate of retinal ganglion cell (RGC) count developed by Medeiros et al. as a tool for diagnosis of glaucoma in Japanese patients. STUDY DESIGN: Cross-sectional study. METHODS: Thirty-one eyes of 19 healthy controls and 106 eyes of 70 glaucoma patients underwent standard automated perimetry (SAP) and three types of spectral domain optical coherence tomography (SD-OCT) imaging using the Cirrus, RTVue, and 3D-OCT instruments...
October 13, 2017: Japanese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29025609/blood-loss-in-trochanteric-fractures-multivariate-analysis-comparing-dynamic-hip-screw-and-gamma-nail
#7
Mario Ronga, Daniele Bonzini, Marco Valoroso, Giuseppe La Barbera, Jacopo Tamini, Mario Cherubino, Paolo Cherubino
INTRODUCTION: Anaemia in patients with trochanteric fracture is associated with increased morbidity and mortality and it is an independent risk factor for functional mobility of patients. Several authors have reported the blood loss following operative treatment comparing different fixation systems but few authors have evaluated many associated variables that could influence the perioperative blood loss. PURPOSE: To evaluate the blood loss in patients that had their trochanteric fracture stabilized with dynamic hip screw (DHS) or Gamma nail...
October 2017: Injury
https://www.readbyqxmd.com/read/29023385/implementation-of-high-time-delay-accuracy-of-ultrasonic-phased-array-based-on-interpolation-cic-filter
#8
Peilu Liu, Xinghua Li, Haopeng Li, Zhikun Su, Hongxu Zhang
In order to improve the accuracy of ultrasonic phased array focusing time delay, analyzing the original interpolation Cascade-Integrator-Comb (CIC) filter, an 8× interpolation CIC filter parallel algorithm was proposed, so that interpolation and multichannel decomposition can simultaneously process. Moreover, we summarized the general formula of arbitrary multiple interpolation CIC filter parallel algorithm and established an ultrasonic phased array focusing time delay system based on 8× interpolation CIC filter parallel algorithm...
October 12, 2017: Sensors
https://www.readbyqxmd.com/read/29022105/structural-and-electronic-study-of-iron-based-dye-sensitizers-for-solar-cells-using-dft-tddft
#9
Assia Bourouina, Mâammar Rekhis
Ruthenium-based molecules have proven their efficiency as photosensitizers in dye-sensitized solar cells. However, due to the high cost and scarcity of this noble metal, in this work we investigated the effects of replacing the ruthenium in photosensitizers with iron because it is less expensive and more abundant. DFT and TD-DFT methods were used to explore the resulting systems. The B3LYP functional was employed to compute the ground-state geometries and the frontier molecular orbitals for four complexes of general formula M(Rbpy)2S2N2C2 (M = Ru or Fe; R = COOH or COOEt)...
October 12, 2017: Journal of Molecular Modeling
https://www.readbyqxmd.com/read/29021866/criteria-for-short-qt-interval-based-on-a-new-qt-heart-rate-adjustment-formula
#10
Simon W Rabkin
BACKGROUND: A short QT interval, within which an increased risk for atrial fibrillation and/or fatal cardiac arrhythmias occurs, has been difficult to define. METHODS: The lower percentiles of a new QTc formula were determined, using a precise mathematical fitting of the QT-heart rate relationship from the ECGs of 13,600 individuals from the NHANES II and III surveys. RESULTS: The QTc interval for persons in the lower fifth percentile, second (2...
October 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/29021828/endurance-exercise-training-decreased-serum-levels-of-surfactant-protein-d-and-improved-aerobic-fitness-of-obese-women-with-type-2-diabetes
#11
Sajjad Rezaei, Mahdieh Molanouri Shamsi, Mehdi Mahdavi, Azadeh Jamali, Jonato Prestes, Ramires Alsamir Tibana, James Wilfred Navalta, Fabrício Azevedo Voltarelli
BACKGROUND: Surfactant protein D (SP-D) is a member of the collectin family and is an important component of the pulmonary innate host defense. To find the relationship between exercise training and SP-D in diabetes, we examined the possible effects of a 10-week endurance exercise-training program on serum levels of SP-D, leptin, lipid profile and insulin resistance in obese women with type-2 diabetes mellitus (T2DM). METHODS: Twenty-two obese women with T2DM were randomly assigned to either exercise training (ET) or control (C) group...
2017: Diabetology & Metabolic Syndrome
https://www.readbyqxmd.com/read/29020390/smoking-may-increase-the-risk-of-influenza-hospitalization-and-reduce-influenza-vaccine-effectiveness-in-the-elderly
#12
Pere Godoy, Jesús Castilla, Núria Soldevila, José María Mayoral, Diana Toledo, Vicente Martín, Jenaro Astray, Mikel Egurrola, Maria Morales-Suarez-Varela, Angela Domínguez
Background: Through its effects on the immune system, smoking may facilitate influenza virus infection, its severity and its most frequent complications. The objective was to investigate the smoking history as a risk factor for influenza hospitalization and influenza vaccine effectiveness in elderly smokers/ex-smokers and non-smokers. Methods: We carried out a multicenter case-control study in the 2013-2014 and 2014-2015 influenza seasons. Cases aged ≥65 years and age-, sex-matched controls were selected from 20 Spanish hospitals...
September 8, 2017: European Journal of Public Health
https://www.readbyqxmd.com/read/29019577/influence-of-the-colon-in-liver-regeneration-of-rats-submitted-to-hepatectomy-and-colectomy
#13
Marília Carvalho Moreira, Ítalo Medeiros Azevedo, Cláudia Nunes Oliveira, Aldo da Cunha Medeiros
OBJECTIVE: to evaluate whether colectomy, associated with 70% hepatectomy, influences liver regeneration in rats. METHODS: we distributed 18 Wistar rats in three groups of six animals each. In group I (sham), we performed laparotomy; In group II, colectomy + 70% hepatectomy; In group III, only 70% hepatectomy. On the 6th postoperative day, we collected blood by cardiac puncture under anesthesia, followed by euthanasia. We performed serum dosages of aspartate aminotransferase (AST), alanine aminotransferase (ALT), albumin and alkaline phosphatase (AF), hepatocyte growth factor (HGF) and transforming growth factor-α (TGF-α)...
September 2017: Revista do Colégio Brasileiro de Cirurgiões
https://www.readbyqxmd.com/read/29019066/release-mechanism-between-ion-osmotic-pressure-and-drug-release-in-ionic-driven-osmotic-pump-tablets-i
#14
Lizhen Cheng, Siqi Gao, Defang Ouyang, Haiying Wang, Yongfei Wang, Weisan Pan, Xinggang Yang
The objective of this study was to develop an authentic ionic-driven osmotic pump system and investigate the release mechanism, simultaneously exploring the in vitro and in vivo correlation of the ionic-driven osmotic pump tablet. A comparison of the ionic-driven and conventional theophylline osmotic pump, the influence of pH and the amount of sodium chloride on drug release, the relationship between the ionic osmotic pressure and the drug release, and the pharmacokinetics experiment in beagle dogs were investigated...
October 10, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/29018346/comparative-analysis-of-compatibility-effects-on-invigorating-blood-circulation-for-cyperi-rhizoma-series-of-herb-pairs-using-untargeted-metabolomics
#15
Pei Liu, Er-Xin Shang, Yue Zhu, Jin-Gao Yu, Da-Wei Qian, Jin-Ao Duan
The mutual-assistance compatibility of Cyperi Rhizoma (Xiangfu, XF) and Angelicae Sinensis Radix (Danggui, DG), Chuanxiong Rhizoma (Chuanxiong, CX), Paeoniae Radix Alba (Baishao, BS), or Corydalis Rhizoma (Yanhusuo, YH), found in a traditional Chinese medicine (TCM) named Xiang-Fu-Si-Wu Decoction (XFSWD), can produce synergistic and promoting blood effects. Nowadays, XFSWD has been proved to be effective in activating blood circulation and dissipating blood stasis. However, the role of the herb pairs synergistic effects in the formula were poorly understood...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29018200/direction-specific-interaction-forces-underlying-zinc-oxide-crystal-growth-by-oriented-attachment
#16
X Zhang, Z Shen, J Liu, S N Kerisit, M E Bowden, M L Sushko, J J De Yoreo, K M Rosso
Crystallization by particle attachment is impacting our understanding of natural mineralization processes and holds promise for novel materials design. When particles assemble in crystallographic alignment, expulsion of the intervening solvent and particle coalescence are enabled by near-perfect co-alignment via interparticle forces that remain poorly quantified. Here we report measurement and simulation of these nanoscale aligning forces for the ZnO(0001)-ZnO(000[Formula: see text]) system in aqueous solution...
October 10, 2017: Nature Communications
https://www.readbyqxmd.com/read/28994519/-establish-quality-evaluation-method-based-on-standard-decoction-of-danshen-extract
#17
Qing Dong, Hua-Tao Yu, Yun-Tao Dai, Jung Chao, Zi-Quan Fan, Dan-Dan Wang, Chao Zhu, Shi-Lin Chen
The quality of Danshen extract granules on market is largely different from each other mainly due to the heterogeneous quality of raw materials of Salvia miltiorrhiza, various producing procedures and lack of good quality evaluation method. Formula granule and "standard decoction" have the same quality. In this paper, a systematic evaluation method for the quality of Danshen decoction was established from the perspective of "standard decoction", in order to explore the main factors affecting the quality uniformity of Danshen extract granules...
March 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28993019/a-modified-formula-for-dose-calculations-of-stereotactic-ablative-body-radiotherapy-for-non-small-cell-lung-cancer
#18
Yangsen Cao, Xiaofei Zhu, Yu Zhang, Chunshan Yu, Yongming Liu, Yongjian Sun, Zhitao Dai, Xueling Guo, Xiaoping Ju, Huojun Zhang
To provide a modified formula consistent with the Monte Carlo (MC) algorithm for dose calculations during stereotactic ablative body radiotherapy for non-small cell lung cancer. Seventy CyberKnife treatment plans were calculated and analyzed by MC and ray-tracing (RT) algorithms, separately. Parameters of treatment plans were compared, and those associated with differences of dose distributions were analyzed to establish a modified formula. Gross tumor volume and tumor tracking volume (TTV) were defined as the evident disease on the sequences of the window width and level of the lung and the mediastinum...
October 6, 2017: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
https://www.readbyqxmd.com/read/28991853/simulated-keratometry-versus-total-corneal-power-by-ray-tracing-a-comparison-in-prediction-accuracy-of-intraocular-lens-power
#19
Giacomo Savini, Kenneth J Hoffer, Domenico Schiano Lomoriello, Pietro Ducoli
PURPOSE: To investigate the relationship between corneal powers measured by simulated keratometry (Sim-K) and ray tracing and understand whether their difference influences intraocular lens (IOL) power calculation. METHODS: In a first sample of healthy eyes, corneal curvature was measured using a rotating Scheimpflug camera (Sirius, CSO). Sim-K was obtained from anterior corneal curvature using the 1.3375 keratometric index. Ray tracing was performed through both corneal surfaces to calculate the total corneal power (TCP)...
November 2017: Cornea
https://www.readbyqxmd.com/read/28991676/sulfonylurea-drug-pretreatment-and-functional-outcome-in-diabetic-patients-with-acute-intracerebral-hemorrhage
#20
Jason J Chang, Yasser Khorchid, Ali Kerro, L Goodwin Burgess, Nitin Goyal, Anne W Alexandrov, Andrei V Alexandrov, Georgios Tsivgoulis
PURPOSE: Intracerebral hemorrhage (ICH) is associated with poor clinical outcome and high mortality. Sulfonylurea (SFU) use may be a viable therapy for inhibiting sulfonylurea receptor-1 and NCCa-ATP channels and reducing perihematomal edema and blood-brain barrier disruption. We sought to evaluate the effects of prehospital SFU use with outcomes in diabetic patients with acute ICH. METHODS: We retrospectively analyzed a cohort of diabetic patients presenting with acute ICH at a tertiary care center...
October 15, 2017: Journal of the Neurological Sciences
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