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101.
OBJECTIVE: To identify variables, obtained from historical factors and sperm analysis, associated with greater chances of pregnancy in infertile couples. METHODS: The study was carried out in Córdoba, Argentina. The characteristics of 247 couples consulting for infertility who achieved pregnancy within 3 years of their first visit were compared with those of 312 couples who did not become pregnant. We evaluated the relationship between the age of the woman and her partner, the type and duration of infertility, length of the last three menstrual cycles, history of pelvic surgery in the woman, and testicular volume, sperm density, motility and morphology in her partner, and the achievement of pregnancy. For the analysis, logistic regression was used. RESULTS: Six variables had a predictive value: sperm morphology, the woman's age, type and duration of infertility, her history of pelvic surgery, and duration of menstrual cycles. CONCLUSIONS: The best prognosis for future fertility in infertile couples is correlated with a higher percentage of normal sperm morphology, younger woman's age, secondary infertility, fewer years of infertility, negative history of pelvic surgery, and abnormal menstrual cycles. 相似文献
102.
Analyzed the effect of client characteristics and treatment on 9 dimensions of functioning (e.g., sociolegal, thought processes, and interpersonal relations) among 1,519 male and 1,877 female patients. MANOVA yielded consistent and significant differences in levels of functioning at admission as a function of sex, treatment setting, and diagnosis. Women with transient disorders showed the most adequate functioning. A Diagnosis?×?Agency interaction was also significant and indicated greater differences in functioning at admission between hospitalized and nonhospitalized Ss with "less severe" diagnoses than for Ss with schizophrenia or personality disorders. Subsequently, MANCOVA was used to partial out the effects of admission level of functioning on terminal level of functioning. Several significant differential effects of treatment and client characteristics were noted. There were fewer differences at termination than at admission, and significant differences in terminal level of functioning were observed by sex, diagnosis, and treatment agency. The interaction of sex and diagnosis was significant as was the interaction between agency and diagnosis. (9 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
103.
Shela Gorinstein Jerzy Drzewiecki Efren Delgado-Licon Elke Pawelzik Alma Leticia Martinez Ayala Oscar J. Medina Ratiporn Haruenkit Simon Trakhtenberg 《European Food Research and Technology》2005,221(1-2):69-77
Comparative protein studies of cereals and pseudocereals are important, especially in cases of cereal protein allergy when pseudocereal substitution is unavoidable. Therefore, ten species and cultivars belonging to different Angiosperms families (Oryza sativa normal Poaceae, bran Poaceae and Jasmin Hom Dokmali Poaceae, Sorghum technicum Battand et Traubt Poaceae, Glycine max L. Merr. Fabaceae, Fagopyrum esculentum Mnch. Polygonaceae, Chenopodium quinoa Wild Chenopodiaceae, Amaranthus hybridum v.1004 Amaranthaceae, cruentus v. R104 Amaranthaceae and hypochondriacus v.1023 Amaranthaceae) were examined by sodium dodecyl sulphate (SDS-PAGE) seed protein markers, fluorescence, circular dichroism (CD) spectra and Fourier transform infrared (FT-IR) measurements. A high degree of polymorphism of all species and cultivars was found. Amaranth species have very similar seed protein electrophoretic profiles. According to UPGMA algorithm the examined species and varieties could be clustered into two similarity groups. Soybean, quinoa, buckwheat and Amaranth (as a genus) can be considered as phylogenic distant taxa. The fluorescence properties of amaranth, soybean, quinoa, rice and buckwheat soluble protein fractions were measured by fluorescence of tryptophan at 295 nm, light intensity, peak response and shift in the maximum of emission. Relative structural stabilities of native proteins were estimated by CD and FTIR. Similarities were found between these plants, which could make them a substitution of each other as well as for cereals.Author, S. Gorinstein is affiliated with the David R. Bloom Center for Pharmacy. 相似文献
104.
Berlanga-Reyes CM Carvajal-Millan E Lizardi-Mendoza J Islas-Rubio AR Rascón-Chu A 《International journal of molecular sciences》2011,12(9):5853-5861
Ferulated arabinoxylans were alkali-extracted from wheat bran at different incubation times (0.0, 0.5, 1.0, 1.5 and 2.0 h). Wheat bran ferulated arabinoxylans (WBAX) arabinose-to-xylose ratio, ferulic acid content, intrinsic viscosity and viscosimetric molecular weight values decreased as the incubation time of extraction increased. WBAX enzymatic cross-linking capability was affected by incubation time while an increase in WBAX concentration from 5 to 6% (w/v) favored gelation. The WBAX gels formed presented a macroporous structure with mesh size ranging from 40 to 119 nm and hardness values varying from 1.7 to 5 N. 相似文献
105.
Four expanded granular sludge bed (EGSB) bioreactors were seeded with a mesophilically-grown granular sludge and operated in duplicate for mesophilic (37 °C; R1 & R2) and low- (15°; R3 & R4) temperature treatment of a synthetic volatile fatty acid (VFA) based wastewater (3 kg COD m−3 d−1) with one of each pair (R1 & R3) supplemented with increasing concentrations of trichloroethylene (TCE; 10, 20, 40, 60 mg l−1) and one acting as a control. Bioreactor performance was evaluated by % COD removal efficiency and % biogas methane (CH4) content. Quantitative Polymerase Chain Reaction (qPCR) was used to investigate the methanogenic community composition and dynamics in the bioreactors during the trial, while specific methanogenic activity (SMA) and toxicity assays were utilized to investigate the activity and TCE/dichloroethylene (DCE) toxicity thresholds of key trophic groups, respectively. At both 37 °C and 15 °C, TCE levels of 60 mg l−1 resulted in the decline of % COD removal efficiencies to 29% (Day 235) and 37% (Day 238), respectively, and in % biogas CH4 to 54% (Day 235) and 5% (Day 238), respectively. Despite the inhibitory effect of TCE on the anaerobic digestion process, the main drivers influencing methanogenic community development, as determined by qPCR and Non-metric multidimensional scaling analysis, were (i) wastewater composition and (ii) operating temperature. At the apical TCE concentration both SMA and qPCR of methanogenic archaea suggested that acetoclastic methanogens were somewhat inhibited by the presence of TCE and/or its degradation derivatives, while competition by dechlorinating organisms may have limited the availability of H2 for hydrogenotrophic methanogenesis. In addition, there appeared to be an inverse correlation between SMA levels and TCE tolerance, a finding that was supported by the analysis of the inhibitory effect of TCE on two additional biomass sources. The results indicate that low-temperature anaerobic digestion is a feasible approach for the treatment of TCE-containing wastewater. 相似文献
106.
Shela Gorinstein Oscar J. Medina Vargas Nicolas O. Jaramillo Ines Arnao Salas Alma Leticia Martinez Ayala Patricia Arancibia-Avila Fernando Toledo Elena Katrich Simon Trakhtenberg 《European Food Research and Technology》2007,225(3-4):321-328
The objective of the present study was to investigate the effect of phenolic substances and proteins on the antioxidant potentials
in some cereals and pseudocereals and to compare their bioability. The polyphenol dry matter extracts (PDME) from the investigated
seeds of buckwheat, rice, soybean, amaranth and quinoa with 1.2 M HCl in 50% methanol/water (PDME50%Met/HCl) exhibited higher
inhibition of lipid peroxidation than the ones extracted with 50% methanol/water (PDME50%Met) and were comparable to the antioxidant
activity of butylated hydroxyanisole at concentration of 0.2 mg mL−1. The antioxidant activities of these seed extracts determined by 2,2′-azinobis (3-ethylbenzothiazoline-6-sulfonate)-ABTS●+/K2S2O8, β-carotene bleaching (β-carotene), and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging methods showed high correlation
coefficients (R
2) such as 0.9515, 0.9058 and 0.8723, respectively, with the presence of total polyphenols estimated by Folin-Ciocalteu assay.
These results indicate that the major antioxidant components in these extracts mostly derived from the polyphenols, and proteins
showed only minimal values of bioactivity. Based on high contents of polyphenols, anthocyanins, flavonoids and their antioxidant
activities pseudocereals such as buckwheat, quinoa and amaranth can be a substitute for cereals for common and atherosclerotic
diets and sometimes in the allergic cases. 相似文献
107.
Mathieu Lepot Jean-Baptiste Aubin François H. L. R. Clemens Alma Mašić 《Urban Water Journal》2017,14(9):908-921
UV/Vis spectrophotometers have been used to monitor water quality since the early 2000s. Calibration of these devices requires sampling campaigns to elaborate relations between recorded spectra and measured concentrations. In order to build robust calibration data sets, several spectra must be recorded per sample. This study compares two approaches – principal component analysis and data depth theory – to identify outliers and select the most representative spectrum (MRS) among the repetitively recorded spectra. Detection of samples that contain outliers is consistent between the methods in more than 70% of the samples. Identification of spectra as outliers is consistent in more than 95% of the cases. The identification of MRS differs depending on the approach used. In their current form, both of the proposed approaches can be used for outlier detection and identification. Further studies are suggested to combine the methods and develop an automated ranking and sorting system. 相似文献
108.
Administered O. J. Harvey's "This I Believe" Test to undergraduates. 55 Ss were selected with concrete belief systems and 29 with abstract systems. Ss then played the role of arguing against their own stand on an ego-involving issue which was scored for 5 attributes: number to topics discussed, number of approaches utilized in the arguments, openness to negative evaluation, ethnocentrism, and absolutism. Ss also completed the WAIS Digit-Symbol Substitution test, a vocabulary test, an arithmetic test, the A-State scale of the State-Trait Anxiety Inventory. On the basis of the anxiety measure, Ss were divided into "high" and "low" anxiety groups, and a 2-way analysis of variance (Concreteness-Abstractness * Anxiety) was run for each of the 8 dependent variables. Anxiety exercised a significant main effect on none of the 8 dependent variables, while concreteness-abstractness significantly affected 5. The interaction of these 2 variables, while in the anticipated direction in all instances, significantly affected performance only on the vocabulary measure. (29 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
109.
Belfield KD Bondar MV Hernandez FE Morales AR Przhonska OV Schafer KJ 《Applied optics》2004,43(34):6339-6343
The nonlinear transmission and the excited-state absorption spectra of three fluorene derivatives exhibiting large two-photon absorptivity were measured by the third harmonic of a picosecond Nd:YAG laser. We analyzed their capability for exhibiting stimulated emission in polar solvents and found that asymmetrical fluorene compounds with a diphenylamino substituent exhibited large Stokes shifts (approximately 8000 cm(-1)), high quantum yields (approximately 0.9-1.0), and no optical gain over their entire fluorescence spectral region. In contrast, a symmetrical fluorene derivative with vinylphenylbenzothiazole substituents in positions 2 and 7 underwent lasing under one-photon excitation by use of picosecond pulsed irradiation. 相似文献
110.
In this study, an experimental investigation was carried out to determine the effects of gasoline-like fuel (GLF), and its blends with turpentine with ratios of 10%, 20%, and 30% on the performance and emission characteristics of a gasoline engine. The GLF was obtained from waste lubrication engine oil by the method of pyrolitic distillation. Characteristics of the pure GLF and its blends were tested. A series of engine performance and emission tests were conducted using the fuel samples in the test engine. Performance parameters for each test were calculated utilizing measurement values of force exerted on the crank shaft, rate of air and fuel mass flow to the engine and engine speed. Effects of the fuels on the performance parameters, exhaust gas temperature, and emissions of NOx, CO, CO2, and HC were discussed. The results indicated that torque, brake mean effective pressure and thermal efficiency increased but brake specific fuel consumption decreased with increasing amount of turpentine in the GLF sample. The main effect of 10%, 20% and 30% turpentine additions to GLF on pollutant formation was that the NOx ratio increased, whereas that of CO decreased. 相似文献