keyword
MENU ▼
Read by QxMD icon Read
search

agriculture

keyword
https://www.readbyqxmd.com/read/28651380/utilization-of-acid-pre-treated-coconut-dregs-as-a-substrate-for-production-of-detergent-compatible-lipase-by-bacillus-stratosphericus
#1
Nur Bainun Mohd Zin, Busyra Mohamad Yusof, Siti Nurbaya Oslan, Helmi Wasoh, Joo Shun Tan, Arbakariya B Ariff, Murni Halim
In recent years, many efforts have been directed to explore the methods to reduce the production costs of industrial lipase by improving the yield and the use of low-cost agricultural wastes. Coconut dregs, which is a lignocellulosic by-product from coconut oil and milk processing plants, is rich in cellulose (36%) and crude fat (9%). A newly isolated Bacillus stratosphericus has been demonstrated to perform cellulose hydrolysis on coconut dregs producing fermentable sugars. The highest extracellular lipase activity of 140 U/mL has been achieved in submerged fermentation with acid pre-treated coconut dregs...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28651326/heterogeneity-in-cultivation-based-monitoring-of-airborne-bacterial-biodiversity-in-animal-farms
#2
Udo Jäckel, Elena Martin, Jenny Schäfer
Diversity analyses of bioaerosol samples from highly loaded workplaces as found in agricultural production or waste management help to improve the knowledge of exposure levels of workers. However, different used methods resulting in the detection of different bacterial species at the same work places. The present study obviously supports the deviation of received results using cultivation and further isolation approaches. Within the present study, the bacterial community at workplaces was estimated using the powerful tool of 16S rRNA gene sequence analyses after cultivation procedure...
June 23, 2017: Annals of Work Exposures and Health
https://www.readbyqxmd.com/read/28651319/utilization-of-rice-husks-functionalized-with-xanthates-as-cost-effective-biosorbents-for-optimal-cd-ii-removal-from-aqueous-solution-via-response-surface-methodology
#3
Jianhua Qu, Xianlin Meng, Hong You, Xiuqing Ye, Zhaolin Du
Pristine rice husk (RH), a kind of agricultural waste based biosorbent, was chemically modified by introducing sulfur-bearing groups with the CS2 treatment under caustic medium. Using response surface methodology (RSM), the interactive effects of three preparation variables on the cadmium uptake and material yield of xanthate-modified rick husk (RH-X) were investigated, and two quadratic regression models were developed to correlate the preparation parameters to the two responses. Through process optimization, the optimal RH-X was finally obtained under the optimum synthesis conditions (i...
June 13, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28651315/linking-potential-nitrification-rates-nitrogen-cycling-genes-and-soil-properties-after-remediating-the-agricultural-soil-contaminated-with-heavy-metal-and-fungicide
#4
Manyun Zhang, Shahla Hosseini Bai, Li Tang, Yaling Zhang, Ying Teng, Zhihong Xu
Apart from the contaminant removal, the remediation of agricultural soil should also pay more attention to soil nutrient retention and biogeochemical cycling. This study aimed to evaluate changes of soil properties, potential nitrification rates (PNRs), and functional gene abundances and link their relationships after remediating co-contaminated agricultural soil with Medicago sativa L. (alfalfa) planting, alone or together with biochar application. Compared with the control (CK), alfalfa planting, alone or together with biochar application, could significantly increase soil organic matter (SOM) contents and discrepantly affect soil pH values...
June 19, 2017: Chemosphere
https://www.readbyqxmd.com/read/28651254/a-preliminary-study-of-a-spanish-graphic-novella-targeting-hearing-loss-prevention
#5
Mark Guiberson, Emily Wakefield
Purpose: This preliminary study developed a digital graphic novella targeting hearing protection beliefs of Spanish-speaking agricultural workers. Researchers used pretest-posttest interview surveys to establish if the novella had an immediate influence on the participants' beliefs about noise-induced hearing loss and usage of hearing protection devices. Method: Researchers developed a digital graphic novella directed to increase knowledge about noise-induced hearing loss and increase the proper use of hearing protection devices...
June 23, 2017: American Journal of Audiology
https://www.readbyqxmd.com/read/28651182/chronic-effects-of-atrazine-exposure-and-recovery-in-freshwater-benthic-diatoms-from-two-communities-with-different-pollution-histories
#6
Rebecca J Wood, Simon M Mitrovic, Richard P Lim, Ben J Kefford
Diffuse agricultural runoff into rivers can result in contamination with herbicides for prolonged periods of time. Chronic exposure to herbicides has the potential to alter toxic impacts in primary producers such as benthic diatoms. Determining how individual diatom taxa respond to herbicide exposure over varied exposure durations is essential for assessing herbicide impacts. This study investigated the responses of various benthic diatom taxa and effects at the community level over 12days of atrazine exposure...
June 19, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28651022/can-natural-variation-in-grain-p-concentrations-be-exploited-in-rice-breeding-to-lower-fertilizer-requirements
#7
Fanmiao Wang, James Douglas Morrison King, Terry Rose, Tobias Kretzschmar, Matthias Wissuwa
Agricultural usage of phosphorus (P) is largely driven by the amount of P removed from fields in harvested plant matter as offtake needs to be balanced by P fertilizer application. Reducing P concentration in grains is a way to decrease P offtake and reduce P fertilizer requirements or soil P mining where insufficient P is applied. Our objective was to assesses the genotypic variation for grain P concentration present within the rice gene pool and resolve to what extent it is affected by environment (P supply) or associated with genetic factors...
2017: PloS One
https://www.readbyqxmd.com/read/28650626/selenium-sequestration-in-a-cationic-layered-rare-earth-hydroxide-a-combined-batch-experiments-and-exafs-investigation
#8
Lin Zhu, Linjuan Zhang, Jie Li, Duo Zhang, Lanhua Chen, Daopeng Sheng, Shitong Yang, Chengliang Xiao, Jianqiang Wang, Zhifang Chai, Thomas E Albrecht-Schmitt, Shuao Wang
Selenium is of great concern owing to its acutely toxic characteristic at elevated dosage and the long-term radiotoxicity of 79Se. The contents of selenium in industrial wastewater, agricultural runoff, and drinking water have to be constrained to a value of 10 μg/L as the maximum concentration limit. We reported here the selenium uptake using a structurally well-defined cationic layered rare earth hydroxide, Y2(OH)5Cl•1.5H2O. The sorption kinetics, isotherms, selectivity, and desorption of selenite and selenate on Y2(OH)5Cl•1...
June 26, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28650266/disease-suppressive-soils-new-insights-from-the-soil-microbiome
#9
Daniel Schlatter, Linda L Kinkel, Linda S Thomashow, David M Weller, Timothy Carl Paulitz
Soils suppressive to soilborne pathogens have been identified world-wide for almost 60 years and attributed mainly to suppressive or antagonistic microorganisms. Rather than identifying, testing and applying potential biocontrol agents in an inundative fashion, research into suppressive soils has attempted to understand how indigenous microbiomes can reduce disease, even in the presence of the pathogen, susceptible host, and favorable environment. Recent advances in next-generation sequencing of microbiomes have provided new tools to reexamine and further characterize the nature of these soils...
June 26, 2017: Phytopathology
https://www.readbyqxmd.com/read/28649588/dataset-on-the-superabsorbent-hydrogel-synthesis-with-sio2-nanoparticle-and-role-in-water-restoration-capability-of-agriculture-soil
#10
Vinay Mohan Pathak, Navneet Kumar
Synthetic polymer was exploited as water-superabsorbent hydrogel and helped to conserve water in the agricultural soil. The hydrogel polymers were synthesized the carboxymethyl cellulose (CMC) and starch in addition to SiO2 nanoparticles. Superabsorbent hydrogel polymer having 35% water retention ability was analyzed with three replicates. Hydrogel increased the water restoration capability of agricultural soil.
August 2017: Data in Brief
https://www.readbyqxmd.com/read/28649337/the-role-of-conservative-versus-innovative-nesting-behavior-on-the-25-year-population-expansion-of-an-avian-predator
#11
Andreia Dias, Luís Palma, Filipe Carvalho, Dora Neto, Joan Real, Pedro Beja
Species ranges often change in relation to multiple environmental and demographic factors. Innovative behaviors may affect these changes by facilitating the use of novel habitats, although this idea has been little explored. Here, we investigate the importance of behavior during range change, using a 25-year population expansion of Bonelli's eagle in southern Portugal. This unique population is almost exclusively tree nesting, while all other populations in western Europe are predominantly cliff nesting. During 1991-2014, we surveyed nest sites and estimated the year when each breeding territory was established...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28649328/spatiotemporal-variation-in-mechanisms-driving-regional-scale-population-dynamics-of-a-threatened-grassland-bird
#12
Danielle M Ethier, Nicola Koper, Thomas D Nudds
To achieve national population targets for migratory birds, landscape-level conservation approaches are increasingly encouraged. However, knowledge of the mechanisms that drive spatiotemporal patterns in population dynamics are needed to inform scale-variant policy development. Using hierarchical Bayesian models and variable selection, we determined by which mechanism(s), and to what extent, changes in quantity and quality of surrogate grassland habitats contributed to regional variation in population trends of an obligatory grassland bird, Bobolink (Dolichonyx oryzivorous)...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28649261/the-role-of-sink-strength-and-nitrogen-availability-in-the-down-regulation-of-photosynthetic-capacity-in-field-grown-nicotiana-tabacum-l-at-elevated-co2-concentration
#13
Ursula M Ruiz-Vera, Amanda P De Souza, Stephen P Long, Donald R Ort
Down-regulation of photosynthesis is among the most common responses observed in C3 plants grown under elevated atmospheric CO2 concentration ([CO2]). Down-regulation is often attributed to an insufficient capacity of sink organs to use or store the increased carbohydrate production that results from the stimulation of photosynthesis by elevated [CO2]. Down-regulation can be accentuated by inadequate nitrogen (N) supply, which may limit sink development. While there is strong evidence for down-regulation of photosynthesis at elevated [CO2] in enclosure studies most often involving potted plants, there is little evidence for this when [CO2] is elevated fully under open-air field treatment conditions...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28649038/multiple-spectroscopic-analyses-reveal-the-fate-and-metabolism-of-sulfamide-herbicide-triafamone-in-agricultural-environments
#14
Mengcen Wang, Yuan Qian, Xiaoyu Liu, Peng Wei, Man Deng, Lei Wang, Huiming Wu, Guonian Zhu
Triafamone, a sulfamide herbicide, has been extensively utilized for weed control in rice paddies in Asia. However, its fate and transformation in the environment have not been established. Through a rice paddy microcosm-based simulation trial combined with multiple spectroscopic analyses, we isolated and identified three novel metabolites of triafamone, including hydroxyl triafamone (HTA), hydroxyl triafamone glycoside (HTAG), and oxazolidinedione triafamone (OTA). When triafamone was applied to rice paddies at a concentration of 34...
June 22, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28649028/the-optimization-and-establishment-of-quechers-uplc-ms-ms-method-for-simultaneously-detecting-various-kinds-of-pesticides-residues-in-fruits-and-vegetables
#15
REVIEW
Zhan Xiu-Ping, Ma Lin, Huang Lan-Qi, Chen Jian-Bo, Zhao Li
OBJECTIVES: The quality safety supervision and test of agricultural products urgently need a very excellent analytical method with simultaneously detecting many components in order to assess, prevent and control pesticide residues. METHODS: In this research, three fruits and three vegetables produced in Shanghai were selected as the materials, 54 pesticide residues were detected with the ultra-high performance liquid chromatography-tandem mass spectrometric (UPLC-MS/MS) method on the basis of optimized QuEChERS method according to different materials properties...
June 10, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28649008/environmental-traditional-knowledge-in-a-natural-protected-area-as-the-basis-for-management-and-conservation-policies
#16
Juan Fernando Pío-León, Francisco Delgado-Vargas, Bernardo Murillo-Amador, José Luís León-de-la-Luz, Rito Vega-Aviña, Alejandra Nieto-Garibay, Miguel Córdoba-Matson, Alfredo Ortega-Rubio
Ethnobotany is an adequate tool to identify the most import wild edible plants used by local people and to develop strategies for its sustainable use and policy making. This research records the wild edible plants used by the inhabitants of the Sierra la Laguna Biosphere Reserve, in Mexico, and identified priority species for sustainable development. The employed quantitative approach included the application of a food-oriented index named Food Significance Index (FSI), which integrated cultural, agricultural and food parameters; moreover, it used multivariate analysis to identify priority edible species for use and/or conservation...
June 22, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28648997/effects-tolerance-mechanisms-and-management-of-salt-stress-in-grain-legumes
#17
REVIEW
Muhammad Farooq, Nirmali Gogoi, Mubshar Hussain, Sharmistha Barthakur, Sreyashi Paul, Nandita Bharadwaj, Hussein M Migdadi, Salem S Alghamdi, Kadambot H M Siddique
Salt stress is an ever-present threat to crop yields, especially in countries with irrigated agriculture. Efforts to improve salt tolerance in crop plants are vital for sustainable crop production on marginal lands to ensure future food supplies. Grain legumes are a fascinating group of plants due to their high grain protein contents and ability to fix biological nitrogen. However, the accumulation of excessive salts in soil and the use of saline groundwater are threatening legume production worldwide. Salt stress disturbs photosynthesis and hormonal regulation and causes nutritional imbalance, specific ion toxicity and osmotic effects in legumes to reduce grain yield and quality...
June 16, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28648789/detection-of-west-nile-virus-and-other-common-equine-viruses-in-three-locations-from-the-leeward-islands-west-indies
#18
Pompei Bolfa, Isaac Jeon, Amanda Loftis, Teresa Leslie, Silvia Marchi, Fortune Sithole, Cecile Beck, Sylvie Lecollinet, Stephan Zientara, Aymeric Hans, Charles J Issel
Equines in the West Indies are used for recreational purposes, tourism industry, racing and agriculture or can be found in feral populations. Little is known in the Caribbean basin about the prevalence of some major equine infectious diseases, some with zoonotic potential, listed as reportable by the OIE. Our objective was to study the prevalence of antibodies for West Nile Virus (WNV), Equine Herpes Virus-1 and 4 (EHV-1 and EHV-4), Equine Influenza (EI), Equine Viral Arteritis (EVA) and Equine Infectious Anemia Virus (EIAV) using a retrospective serological convenience study...
June 22, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28648724/nitrogen-fixing-rhizobial-strains-isolated-from-desmodium-incanum-dc-in-argentina-phylogeny-biodiversity-and-symbiotic-ability
#19
María Antonieta Toniutti, Laura Viviana Fornasero, Francisco Javier Albicoro, María Carla Martini, Walter Draghi, Florencia Alvarez, Antonio Lagares, José Francisco Pensiero, María Florencia Del Papa
Desmodium spp. are leguminous plants belonging to the tribe Desmodieae of the subfamily Papilionoideae. They are widely distributed in temperated and subtropical regions and are used as forage plants, for biological control, and in traditional folk medicine. The genus includes pioneer species that resist the xerothermic environment and grow in arid, barren sites. Desmodium species that form nitrogen-fixing symbiosis with rhizobia play an important role in sustainable agriculture. In Argentina, 23 native species of this genus have been found, including Desmodium incanum...
June 7, 2017: Systematic and Applied Microbiology
https://www.readbyqxmd.com/read/28648547/investigations-on-phosphorus-recovery-from-aqueous-solutions-by-biochars-derived-from-magnesium-pretreated-cypress-sawdust
#20
Khouloud Haddad, Salah Jellali, Mejdi Jeguirim, Aida Ben Hassen Trabelsi, Lionel Limousy
The ability of biochars, derived from the pyrolysis at 400 °C; 500 °C and 600 °C of pretreated cypress sawdust with 20 wt% magnesium chloride (MgCl2) solutions, in recovering phosphorus from aqueous solutions was investigated under various experimental conditions in batch mode. The experimental results indicated that cypress sawdust pretreatment with MgCl2 induced important modifications of the physical and chemical biochars' properties favoring phosphorus recovery from the used synthetic solutions. Moreover, phosphorus recovery efficiency increased with the increase of the used pyrolysis temperature...
June 22, 2017: Journal of Environmental Management
keyword
keyword
20680
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"