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Using long-range corrected density functional theory, the relationships between the electronic, magnetic, and nonlinear optical properties are drawn for two families of organic compounds, the dicyclopenta-fused acenes (DPAs) and the polyacenes (PAs), containing up to N = 12 fused rings. First, the longitudinal second h... |
Abstract Evaluation of the genetic diversity present within species is essential for conservation, management and utilization of the genetic resources. The objective of this study was to evaluate genetic variability of 70 common bean genotypes for seed storage proteins, grain morphological characteristics and agronomic... |
It has been suggested that hypoxic pulmonary vasoconstriction (HPV) may mainly proceed via loss of normoxic vasodilation, forwarded by tonic O2-dependent formation of nitric oxide and superoxide (23). Both agents may stimulate guanylate cyclase, the latter via conversion to hydrogen peroxide and formation of compound I... |
Background: [111In-DTPA-D-Phe1]-octreotide scintigraphy allows the visualization of SRIF receptor (SSR)-expressing tumors, including thymic tumors, and normal tissues. While the spleen is clearly visualized, the thymus is not depicted, although both contain SSR. Aim: We evaluated whether the heterogeneity, the type, an... |
Here, we introduce a new image reconstruction algorithm that combines coherent weighting with focal-line-based three-dimensional image reconstruction. The new algorithm addresses the major limitation of a linear ultrasound transducer array, i.e., the poor elevation resolution, and does not require any modification to t... |
Recent developments with theories of international trade have highlighted the importance of firms in forming aggregate trade flows. These models fall into one of two types, described as ‘efficiency’ and ‘quality’ models, depending on the mechanism that leads to the selection of the best firms into export markets. The e... |
The article is devoted to the analysis of jokes about the mechanisms of changing names by Jews. The purpose of the article is to consider various contexts associated with situations of change and choice of a new name among Jews in the 20th century. There is a certain range of Russian names that Jews, as a result of ass... |
Joint detection and automatic modulation classification (AMC) of very low SNR signals with relaxed a priori information has been of significant importance for cognitive radios as it enables the cognitive radio (CR) to react and adapt to the changes in its radio environment. This paper propose an algorithm based on firs... |
CONTEXT |
Rates of teenage childbearing are high in the United States, and they differ substantially by race and ethnicity and nativity status. |
METHODS |
Data from the National Longitudinal Survey of Youth 1997 cohort were used to link characteristics of white, black, U.S.-born Hispanic and foreign-born Hispanic adolescents to teenage childbearing. Following a sample of 3,294 females aged 12-16 through age 19, discrete-time logistic regression analyses were used to exam... |
RESULTS |
In a baseline multivariate analysis controlling for age, compared with whites, foreign-born Hispanics had more than three times the odds of a teenage birth (odds ratio, 3.5), while blacks and native-born Hispanics had about twice the odds (2.1 and 1.9, respectively). Additional controls (for family environments; indivi... |
CONCLUSIONS |
Differences in the context of adolescence may account for a substantial portion of racial, ethnic and nativity differences in teenage childbearing.PEDAGOGICAL TECHNOLOGIES IN CONTEXT PROFESSIONAL TRAINING OF A MUSIC TEACHER |
In article the questions o f substantiation contents of pedagogical technologies in context of organization music and polyart activities are considered. Opportunities of influence art culture on musical development of pupils take into account. The choice of methods, receptions, principles of teaching as a part of pedag... |
Graphene-like zinc oxide monolayer (g-ZnO) is a new class of two-dimensional nanomaterials with unique new properties that is still largely unknown. This work studies the tunability of the electronic and magnetic properties of g-ZnO upon chemical doping (with B, N and C) and CO adsorption by using first-principles calc... |
It has been known since the 19th century that a circularly polarised electromagnetic wave carries an angular momentum. A simple experiment (Righi, 1882) apparently indicates that the angular momentum is distributed over the entire cross section of the beam. According to some modern ideas, the angular momentum of the be... |
Male fertility largely depends on sperm quality, which may be affected by environmental and genetic factors. Recent data emphasised the implication of the polymorphism of mitochondrial DNA polymerase gamma (POLG) CAG repeats in male infertility. In this report, we explored a possible role of the (POLG) gene polymorphis... |
The authors have analyzed samples of peritoneal liquid to determine how and in which measure the level of steroid hormones allows to distinguish between follicular rupture and ovulation, and follicular luteinization without rupture and lack of ovulation. Volume of peritoneal fluid is not influenced by endometriosis or... |
Evidence for Selection-by-Environment but Not Genotype-by-Environment Interactions for Fitness-Related Traits in a Wild Mammal Population |
To understand how organisms may adapt to environmental changes, it is necessary to determine how environmental conditions influence evolution in wild... How do environmental conditions influence selection and genetic variation in wild populations? There is widespread evidence for selection-by-environment interactions (... |
Ninety-three children with shigellosis were hospitalized in a regional hospital in Kuwait during the year 1988. S. flexneri was the most common isolate (54%) followed by S. sonnei (39%) and S. boydii (7%). In addition to the gastrointestinal manifestations, 14 patients (15%) developed generalized convulsions. The benig... |
Abstract The Argument for God’s Existence is one of the major issues in the history of philosophy. It also constitutes an illuminating example of a shared philosophical problem in the entangled intellectual histories of Europe and the Islamic World. Drawing on Aristotle, various forms of the argument were appropriated ... |
In times of global unprecedented circumstances, people realise more than ever the importance of communication and interaction. The human mind is an ever-ending source of creativity and determination to keep communicating against all odds. In an era when the global population is on lockdown, humans need to react to this... |
Abstract The article focuses on the research results of Severynivka hillfort fortifications. In 2009 a rampart and a moat on a cliff on the south floor-level side. In 2012-2013 there was made a rampart and escarp sections in the north-eastern part of the fortification. Separate stages of its construction are distinguis... |
Nowadays, Analog to Digital Converter (ADC) has become the main block of mixed signal circuits. Hence, testing ADC circuits is of great interest. In this paper, a low cost structural test is developed for the Time Domain ADC (TD-ADC). The TD-ADC consists of a Voltage-to-Time Converter (VTC) and a Vernier Time-to-Digita... |
BACKGROUND |
Tumor/treatment-related internal lymphedema (IL) and/or external lymphedema (EL) are associated with functional deficits and increased symptom burden in head and neck cancer patients (HNCP). Previously, we noted association between EL/IL and patient-reported dysphagia using the Vanderbilt Head and Neck Symptom Survey (... |
OBJECTIVE |
To determine the relationship between IL/EL and subjective and objective measures of swallowing function. |
METHODS |
Eighty-one HNCP completed: (1) VHNSS version 2.0, including 13 swallowing/nutrition-related questions grouped into three clusters: swallow solids (ss), swallow liquids (sl), and nutrition(nt); (2) physical assessment of EL using Foldi scale; (3) endoscopic assessment of IL using Patterson scale (n = 56); and (4) modifi... |
RESULTS |
VHNSS swallow/nutrition items scores correlated with NOMS/DOSS ratings (p < 0.001). Highest correlation was with NOMS: ss (-0.73); sl (-0.61); nt (-0.56). VHNSS swallow/nutrition scores correlated with maximum grade of swelling for any single structure on Patterson scale: ss (0.43; p = 0.001); sl (0.38; p = 0.004); nt ... |
CONCLUSIONS |
IL correlated with subjective and objective measures of swallow dysfunction. Longitudinal analysis of trajectory and impact of IL/EL on dysphagia is ongoing.Species diversity structure analysis at two sites in the tropical rain forest of Sumatra |
Data from a hilly forest study site at Batang Ule, Sumatra, are organized into 30 100-m × 10-m subplots lying perpendicular to the line of maximal topographic gradient, from the valley to the plateau/ridge. The following methodological question is addressed: what species diversity measures are best used in order to rev... |
Corpora lutea collected at 15, 30 and 60 min after prostaglandin F2 alpha (PGF2 alpha) treatment were compared to control corpora lutea at 60 min after saline treatment. There were decreases (P less than 0.05) in the relative percentages of cytoplasm occupied by granules in large luteal cells (LLC) by 30 min and in sma... |
Artificial sa lt licks in the Teton W ilderness have been created for hun ting pu rposes an d have caused a reas of localized dam age. The purpose of th is study w as to exam ine an d characterize these sites. Physical an d chem ical properties of soils both inside an d outside of sa lt sites were analyzed to com pare ... |
The systematic, spectroscopic two-dimensional classification of the HD stars by N. H. is approximately three-quarters complete. Over 161,000 stars have been classified visually using 10° objective-prism plates (2 Å resolution) taken at CTIO with the Michigan Curtis Schmidt telescope. The published portion of this large... |
One hundred twenty-four patients with malignant obstructive jaundice undergoing Whipple's procedure were divided into two groups. Group I, 72 patients with an average preoperative serum bilirubin level of 13.3 mg/dl underwent pancreaticoduodenectomy after the level dropped to 5.88 mg/dl by preoperative external biliary... |
Heart rate variability (HRV) is a function of cardiac autonomic tone that is widely used in both clinical and animal studies. In preclinical studies, HRV measures are frequently derived using the arterial pulse waveform from an implanted pressure telemetry device, termed pulse rate variability (PRV), instead of the ele... |
Phenyl isocyanate is used to react with 1,3-butanediol at different temperatures. Dimethylformamide is used as solvent. In-situ FT-IR is used to monitor the reaction to work out rate constant, Arrhenius equation and Eyring equation. The urethane reaction has been found to be a second order reaction, and the rate consta... |
The World Bank reports that the number of people living in absolute poverty (ie, consuming less than US $1.90 at 2011 purchasing power parity) has declined from 42% in 1981 to 10.7% in 2013, representing a substantial improvement in living conditions across the globe, driven largely by developments in China and India.1... |
First Page PreviewA new vector quantization technique for performance evaluation in frequency hopping mobile radio systems |
A new technique based on vector quantization (VQ) is proposed for interfacing the link-level and the system level analysis of frequency hopping (FH) mobile systems. The method represents an original solution to overcome the problem that the time scales adopted within the two analysis levels are usually different, thus ... |
BACKGROUND & AIMS |
Liver stiffness (LS) is increased in liver cirrhosis, higher values being associated with complications, among them the development of hepatocellular carcinoma (HCC). However, LS values alone cannot accurately differentiate patients with HCC. Therefore, our aim was to study the performance of LS measurement data and co... |
METHODS |
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