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https://www.readbyqxmd.com/read/28110451/the-importance-of-various-stages-of-succession-in-preservation-of-biodiversity-among-riparian-birds-in-northern-iran
#1
Zahra Sepehri Roshan, Sina Anushiravani, Soroor Karimi, Hossein Varasteh Moradi, Abdol Rasoul Salmanmahini
Every stage of succession may provide certain species with habitat requirements which are impossible in other stages of succession. This study attempts to evaluate the different stages of succession in terms of composition and structure of bird populations in Hyrcanian forests. Bird-habitat relationships were investigated by comparing vegetation characteristics in three successional stages including late, initial stage, and urban areas. Bird richness, diversity, and abundance were measured within a 25-m radius of each of the 120 sampling points in various stages of succession and urban areas from May to April (2014) in the Ziarat catchment...
February 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28110357/the-potential-role-of-tree-diversity-in-reducing-shallow-landslide-risk
#2
Yuta Kobayashi, Akira S Mori
Recently, interest in utilizing ecosystems for disaster risk reduction has increased, even though there remains considerable uncertainty regarding the role of ecosystems in buffering against natural hazards. This ecosystem role can be considered an ecosystem service. Although a strong body of evidence shows that biodiversity enhances ecosystem services, there are only a few studies of the relationship between biodiversity and the role of the ecosystem in reducing the risk of natural disasters. To explore the desired state of an ecosystem for disaster risk reduction we applied the finding that biodiversity enhances ecosystem services to evaluate the role of woody vegetation in reducing the frequency and severity of shallow landslides...
January 21, 2017: Environmental Management
https://www.readbyqxmd.com/read/28110212/effects-of-hydrochemistry-variables-on-the-half-life-of-mancozeb-and-on-the-hazard-index-associated-to-the-sum-of-mancozeb-and-ethylenethiourea
#3
O López-Fernández, E Pose-Juan, R Rial-Otero, J Simal-Gándara
Mancozeb is a dithiocarbamate non-systemic agricultural fungicide with multi-site, protective action. It helps to control many fungal diseases in a wide range of field crops, fruits, nuts, vegetables, and ornamental plants. We have investigated the stability profiles of mancozeb in aqueous solutions to determine the effect of pH, temperature and light on the degradation process of mancozeb. In addition, the toxicological risk for humans associated with the joint intake of mancoze7b and its final degradation product, ethylenethiourea (ETU), was calculated and modelled as a function of the experimental conditions...
January 18, 2017: Environmental Research
https://www.readbyqxmd.com/read/28110198/variation-of-atmospheric-14-co2-and-its-spatial-distribution
#4
Shugang Wu
The atmospheric (14)CO2 is usually presented in the Δ(14)C notation, which cannot reflect its absolute quantity change. This article presents the atmospheric radiocarbon activity concentrations (aacn, reported in mBq/m(3)) in recent years at nine observation stations. The aacn at Schauinsland decrease from 1977 to 1993 but between 1993 and 2003 keeps at a relative steady state. Atmospheric aacns were higher in the northern hemisphere than that in the southern hemisphere. The aacns in the northern hemisphere show clear seasonal cycle with higher value in winter and lower value in summer, while this seasonality is not obvious in the southern hemisphere...
January 19, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28110163/evaluation-of-remediation-techniques-in-soils-affected-by-residual-contamination-with-heavy-metals-and-arsenic
#5
M García-Carmona, A Romero-Freire, M Sierra Aragón, F J Martínez Garzón, F J Martín Peinado
Residual soil pollution from the Aznalcóllar mine spill is still a problem in some parts of the affected area, today converted in the Guadiamar Green Corridor. Dispersed spots of polluted soils, identified by the absence of vegetation, are characterized by soil acid pH and high concentrations of As, Pb, Cu and Zn. Ex situ remediation techniques were performed with unrecovered soil samples. Landfarming, Composting and Biopiles techniques were tested in order to immobilize pollutants, to improve soil properties and to promote vegetation recovery...
January 18, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28110122/17%C3%AE-estradiol-enhances-sulforaphane-cardioprotection-against-oxidative-stress
#6
Cristina Angeloni, Gabriella Teti, Maria Cristina Barbalace, Marco Malaguti, Mirella Falconi, Silvana Hrelia
The lower incidence of ischemic heart disease in female with respect to male gender suggests the possibility that female sex hormones could have specific effects in cardiovascular protection. 17β-Estradiol is the predominant premenopausal circulating form of estrogen and has a protective role on the cardiovascular system. Recent evidences suggest that gender can influence the response to cardiovascular medications; therefore, we hypothesized that sex hormones could also modulate the cardioprotective effects of nutraceutical compounds, such as the isothiocyanate sulforaphane, present in Brassica vegetables...
January 12, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28110066/bioactive-nutrients-time-for-tolerable-upper-intake-levels-to-address-safety
#7
Allison Yates, John W Erdman, Andrew Shao, Laurie Dolan, James C Griffiths
There is increasing interest by consumers, researchers, and regulators into the roles that certain bioactive compounds, derived from plants and other natural sources, can play in health maintenance and promotion, and even prolonging a productive quality of life. Research has rapidly emerged suggesting that a wide range of compounds and mixtures in and from plants (such as fruits and vegetables, tea and cocoa) and animals (such as fish and probiotics) may exert substantial health benefits. There is interest in exploring the possibility of establishing recommended intakes or dietary guidance for certain bioactive substances to help educate consumers...
January 18, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/28109458/increasing-use-of-a-healthy-food-incentive-a-waiting-room-intervention-among-low-income-patients
#8
Alicia J Cohen, Caroline R Richardson, Michele Heisler, Ananda Sen, Ellen C Murphy, Oran B Hesterman, Matthew M Davis, Suzanna M Zick
INTRODUCTION: Diet-related disease is disproportionately concentrated in low-income communities where fruit and vegetable consumption is far below guidelines. To address financial barriers, Double Up Food Bucks (DUFB)-a statewide healthy food incentive-matches Supplemental Nutrition Assistance Program (SNAP) funds spent at farmers markets. However, incentive use is limited. This study examined the impact of a brief waiting room-based intervention about DUFB on program utilization and produce consumption...
February 2017: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/28109419/improving-nutrition-by-limiting-choice-in-the-supplemental-nutrition-assistance-program
#9
EDITORIAL
Jacob A Klerman, Ann M Collins, Lauren E W Olsho
In contrast to the Special Supplemental Nutrition Program for Women, Infants, and Children, the Supplemental Nutrition Assistance Program (SNAP) currently allows the purchase of almost any food. This paper reconsiders the role of two forms of limiting choice in SNAP. Using economic theory, descriptive analysis of survey data, and discussion of random assignment evaluation evidence from the Summer Electronic Benefit Transfer for Children Demonstration, the paper argues that because households can substitute cash for SNAP, banning the use of SNAP for less nutritionally desirable foods (e...
February 2017: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/28109417/associations-of-cooking-with-dietary-intake-and-obesity-among-supplemental-nutrition-assistance-program-participants
#10
Lindsey Smith Taillie, Jennifer M Poti
INTRODUCTION: Participation in the Supplemental Nutrition Assistance Program (SNAP) may help ease economic and time constraints of cooking, helping low-income households prepare healthier meals. Therefore, frequent cooking may be more strongly associated with improved dietary outcomes among SNAP recipients than among income-eligible non-recipients. Alternately, increased frequency of home-cooked meals among SNAP participants may be beneficial simply by replacing fast food intake. This study quantified the association between home cooking and fast food with diet intake and weight status among SNAP recipients...
February 2017: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/28109414/snap-participation-and-diet-sensitive-cardiometabolic-risk-factors-in-adolescents
#11
Cindy W Leung, June M Tester, Eric B Rimm, Walter C Willett
INTRODUCTION: Previous research suggests participation in the Supplemental Nutrition Assistance Program (SNAP) is associated with poorer adult cardiometabolic health; the extent to which these associations extend to adolescents is unknown. Differences in diet quality, obesity, and cardiometabolic risk factors were examined among SNAP participants, income-eligible nonparticipants, and higher-income adolescents. METHODS: The study population comprised 4,450 adolescents ≤300% federal poverty level from the 2003-2010 National Health and Nutrition Examination Survey...
February 2017: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/28109209/nostoc-thermotolerans-sp-nov-a-soil-dwelling-species-of-nostoc-cyanobacteria-isolated-from-madhya-pradesh-india
#12
Archana Suradkar, Chelsea Villanueva, Lira A Gaysina, Dale A Casamatta, Aniket Saraf, Gandhali Dighe, Ratnaprabha Mergu, Prashant Singh
A filamentous, soil dwelling cyanobacterial strain (9C-PS) was isolated from Mandsaur, Madhya Pradesh, India and is being described as new species of Nostoc. Extensive morphological and molecular characterization along with thorough assessment of ecology was performed. The style of filament orientation, type and nature of the sheath (e.g., distribution and visibility across the trichome), and vegetative and heterocyte cell dimensions and shape were assessed for more than a year employing both culture and naturally occurring samples...
January 19, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28108908/diamine-oxidase-from-white-pea-lathyrus-sativus-combined-with-catalase-protects-the-human-intestinal-caco-2-cell-line-from-histamine-damage
#13
Catherine Jumarie, Marilyne Séïde, Lucia Marcocci, Paola Pietrangeli, Mircea Alexandru Mateescu
Diamine oxidase (DAO) administration has been proposed to treat certain gastrointestinal dysfunctions induced by histamine, an immunomodulator, signaling, and pro-inflammatory factor. However, H2O2 resulting from the oxidative deamination of histamine by DAO may be toxic. The purpose of this study was to investigate to which extent DAO from white pea (Lathyrus sativus), alone or in combination with catalase, may modulate histamine toxicity in the human intestinal Caco-2 cell line. The results show that histamine at concentrations higher than 1 mM is toxic to the Caco-2 cells, independently of the cell differentiation status, with a LC50 of ≅ 10 mM following a 24-h exposure...
January 20, 2017: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/28108812/fackel-interacts-with-gibberellic-acid-signaling-and-vernalization-to-mediate-flowering-in-arabidopsis
#14
Bingyao Huang, Pingping Qian, Na Gao, Jie Shen, Suiwen Hou
Fackel (FK) is involved in the flowering of Arabidopsis mainly via the gibberellin pathway and vernalization pathway. This new function of FK is partially dependent on the FLOWERING LOCUS C ( FLC ). A common transitional process from vegetative stage to reproductive stage exists in higher plants during their life cycle. The initiation of flower bud differentiation, which plays a key role in the reproductive phase, is affected by both external environmental and internal regulatory factors. In this study, we showed that the Arabidopsis weak mutant allele fk-J3158, impaired in the FACKEL (FK) gene, which encodes a C-14 reductase involved in sterol biosynthesis, had a long life cycle and delayed flowering time in different photoperiods...
January 20, 2017: Planta
https://www.readbyqxmd.com/read/28108432/living-on-the-edge-conservation-genetics-of-seven-thermophilous-plant-species-in-a-high-arctic-archipelago
#15
Siri Birkeland, Idunn Elisabeth Borgen Skjetne, Anne Krag Brysting, Reidar Elven, Inger Greve Alsos
Small, isolated, and/or peripheral populations are expected to harbour low levels of genetic variation and may therefore have reduced adaptability to environmental change, including climate warming. In the Arctic, global warming has already caused vegetation change across the region and is acting as a significant stressor on Arctic biodiversity. Many of the rare plants in the Arctic are relicts from early Holocene warm periods, but their ability to benefit from the current warming is dependent on the viability of their populations...
January 20, 2017: AoB Plants
https://www.readbyqxmd.com/read/28108181/convergent-repression-of-mir156-by-sugar-and-the-cdk8-module-of-arabidopsis-mediator
#16
Manuel Buendía-Monreal, C Stewart Gillmor
In Arabidopsis, leaves produced during the juvenile vegetative phase are simple, while adult leaves are morphologically complex. The juvenile to adult transition is regulated by miR156, a microRNA that promotes juvenility by impeding the function of SPL transcription factors, which specify adult leaf traits. Both leaf derived sugars, as well as the Mediator Cyclin Dependent Kinase 8 (CDK8) module genes CENTER CITY (CCT)/MED12 and GRAND CENTRAL (GCT)/MED13, act upstream of miR156 to promote the juvenile to adult transition...
January 18, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28108161/behavioral-response-and-gene-expression-changes-in-fipronil-administered-male-japanese-quail-coturnix-japonica
#17
Samah R Khalil, Ashraf Awad, Hesham H Mohammed
Fipronil is an important member of the phenylpyrazole group of insecticides and is widely used for various crops and vegetables to control insects, thereby exposing birds, animals, and humans to fipronil. Currently, there is limited information on the effects of fipronil exposure in Japanese quail. Therefore, our aim was to assess the reproductive toxicological effects of fipronil in the Japanese quail in a 15-day gavage study and then its recovery over a period of 60 days. Fipronil-administration led to significant losses in both feed intake and body weight...
January 17, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28107986/dispersive-solid-phase-extraction-using-polyaniline-modified-zeolite-nay-as-a-new-sorbent-for-multiresidue-analysis-of-pesticides-in-food-and-environmental-samples
#18
Prapha Arnnok, Nopbhasinthu Patdhanagul, Rodjana Burakham
The applicability of polyaniline (PANI)-modified zeolite NaY as a sorbent for multi-class pesticides extraction was investigated. The sorbent had a sorption capacity of 833mgkg(-1) sorbent and preconcentration factor of 42 in the mixture of twenty pesticides. The PANI-coated zeolite NaY was successfully created via oxidative polymerization of aniline onto the surface of the zeolite. The sorbent was applied for dispersive solid phase extraction (DSPE) of commonly used pesticides belonging to five different chemical groups, involving carbamate, organophosphate, sulfonylurea, pyrethroid and neonicotinoid...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107970/a-new-analytical-method-for-quantification-of-olive-and-palm-oil-in-blends-with-other-vegetable-edible-oils-based-on-the-chromatographic-fingerprints-from-the-methyl-transesterified-fraction
#19
Ana M Jiménez-Carvelo, Antonio González-Casado, Luis Cuadros-Rodríguez
A new analytical method for the quantification of olive oil and palm oil in blends with other vegetable edible oils (canola, safflower, corn, peanut, seeds, grapeseed, linseed, sesame and soybean) using normal phase liquid chromatography, and applying chemometric tools was developed. The procedure for obtaining of chromatographic fingerprint from the methyl-transesterified fraction from each blend is described. The multivariate quantification methods used were Partial Least Square-Regression (PLS-R) and Support Vector Regression (SVR)...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107942/stereoselective-quantification-of-triticonazole-in-vegetables-by-supercritical-fluid-chromatography
#20
Qi Tan, Jun Fan, Ruiqi Gao, Rujian He, Tai Wang, Yaomou Zhang, Weiguang Zhang
A highly fast analytical method though supercritical fluid chromatography (SFC) has been developed to quantify triticonazole enantiomers in cucumbers and tomatoes. Effects of organic modifier type and concentration on chiral separation and quantification of standard solution as well as matrix-matched standard solutions have been studied in detail. Among three organic modifiers, better separation of triticonazole racemate was achieved with 20% ethanol (v/v). The run time in SFC (ca 3min) with CO2-ethanol (80:20, v/v) as the mobile phase was six-fold shorter than HPLC analysis (about 18min)...
March 1, 2017: Talanta
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