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https://www.readbyqxmd.com/read/29692102/-soil-olsen-p-content-changing-trend-and-its-relationship-with-phosphorus-surplus-and-crop-yield-under-long-term-fertilization-in-loessial-soil-region-on-the-loess-plateau-china
#1
Sheng Zhe E, Zhi Qi Yang, Xi Bai Zeng, Ya Nan Wang, Zhao Xia Luo, Jin Hua Yuan, Zong Xian Che
The changing trend of soil available phosphorus (Olsen-P) content in soil and its relationship with soil phosphorus surplus and crop yield are fundamental when making appropriate phosphate fertilizer recommendations. In this paper, the influences of long-term fertilization on crops phosphorus uptake, soil phosphorus surplus, changing trend of soil available phosphorus content and relationships of soil available phosphorus content with soil phosphorus surplus and crop yield were investigated through 34 years (1981-2015) long-term trial in loessial soil region on the Loess Plateau...
November 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29692101/-effect-of-long-term-application-of-npk-fertilizer-on-maize-yield-and-yellow-soil-nutrients-sustainability-in-guizhou-china
#2
Yan Ling Liu, Yu Li, Ya Rong Zhang, Xing Cheng Huang, Wen An Zhang, Tai Ming Jiang
A long-term fertilization field experiment was conducted to investigate the effect of nitrogen (N), phosphorus (P), and potassium (K) fertilizer on maize relative yield, yield-increasing effect and the changes of nutrients in yellow soil in Guizhou Province. Five fertilizer combinations were evaluated, including balanced fertilization (NPK) and nutrient deficiency treatments (N, NK, NP, and PK). The maize relative yield, contribution efficiency of N, P, K fertilizer application, sustainability index of soil N, P, K nutrients, and other indicators were measured...
November 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29692061/-the-relative-contributions-of-plant-quality-simulated-rising-temperature-and-habitat-to-litter-decomposition
#3
Hang Wang, Peng Fei Yan, Peng Fei Zhan, Xiao Ning Zhang, Zhen Ya Liu, Yu Jing Guo, De Rong Xiao
With litter bag methods, we examined mass loss rates and different chemical fractions of litters from two wetland plant species, Zizania caduciflora and Hippuris vulgaris. Those two species examined here varied significantly in their initial litter chemical traits. Experiment was performed under simulated rising temperature (1.5-2.0 ℃), and under three different habitats (air, air-water interface and water-soil interface). The results showed that, during one-year decomposition period, the mass resi-dual rates exhibited distinct seasonal dynamics, and there were strong interactive effects between seasonal dynamics and environmental factors...
February 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29692046/-species-functional-structural-diversity-of-typical-plant-communities-and-their-responses-to-environmental-factors-in-miao-archipelago-china
#4
Li Ting Zheng, Tian Su, Xiang Yu Liu, Fang Yin, Chao Guo, Bin Tuo, En Rong Yan
Island vegetation plays an important role in biodiversity research across the world. The study of plant diversity in island is helpful for understanding the mechanism of plant diversity maintenance under land-sea interaction. Here, four typical plant communities (Quercus acutissima community, Robinia pseudoacacia community, Pinus thunbergii community and Vitex negundo community) in Miao Archipelago were selected to examine the species, functional and structural diversities and their responses to environmental factors at the community scale by using species diversity indices, functional diversity indices, as well as structural diversity indices...
February 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29692044/-review-of-lime-carbon-sink
#5
Li Li Liu, Jiang Hua Ling, Li Tie, Jiao Yue Wang, Long Fei Bing, Feng Ming Xi
Under the background of "missing carbon sink" mystery and carbon capture and storage (CCS) technology development, this paper summarized the lime material flow process carbon sink from the lime carbonation principles, impact factors, and lime utilization categories in chemical industry, metallurgy industry, construction industry, and lime kiln ash treatment. The results showed that the lime carbonation rate coefficients were mainly impacted by materials and ambient conditions; the lime carbon sink was mainly in chemical, metallurgy, and construction industries; and current researches focused on the mechanisms and impact factors for carbonation, but their carbon sequestration calculation methods had not been proposed...
January 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29692024/-effects-of-different-fertilization-regimes-on-nitrogen-and-phosphorus-balance-and-eco-economic-benefits-in-red-paddy-field
#6
Xi Hong, Ju Sheng Gao, Zun Zhang Luo, Xi Bai Zeng, Ling Yu Bai, Zhi Yong Luo, Ping Yi, Shu Ping Chen
The nitrogen (N) and phosphorus (P) balance was studied and the eco-economic benefits of N and P were evaluated for the paddy field in a red soil area, under the fertilization treatments of no fertilization (CK), chemical fertilizer (NPK), organic fertilizer (M), and chemical fertilizers combined with organic fertilizers (NPKM, NPM, NKM), based on the long-term experiment started in 1982, to optimize fertilizer application and reduce N and P losses. The results indicated that the slight N surplus (27.10 kg·hm-2 ) and P deficit (-6...
January 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29692002/improving-the-back-surface-field-on-an-amorphous-silicon-carbide-a-sic-h-thin-film-photocathode-for-solar-water-splitting
#7
Paula Perez-Rodriguez, Drialys Cardenas-Morcoso, Ibadillah A Digdaya, Andrea Mangel Raventos, Paul Procel, Olindo Isabella, Sixto Gimenez, Miro Zeman, Wilson A Smith, Arno H M Smets
Amorphous silicon carbide (a-SiC:H) is a promising material for photoelectrochemical (PEC) water splitting due to its relatively small bandgap energy and high chemical and optoelectrical stability. This work studies the interplay between charge carrier separation and collection, and their injection into the electrolyte, when modifying the semiconductor/electrolyte interface. By introducing an n-doped nanocrystaline silicon oxide (nc-SiOx:H) layer into a p/i amorphous silicon carbide (a-SiC:H) photocathode, the photovoltage and photocurrent of the device can be significantly improved, reaching values higher than 0...
April 25, 2018: ChemSusChem
https://www.readbyqxmd.com/read/29691994/chemical-biochemical-preclinical-and-clinical-studies-of-ganoderma-lucidum-polysaccharide-as-an-approved-drug-for-treating-myopathy-and-other-diseases-in-china
#8
REVIEW
Pengjiao Zeng, Zhihua Guo, Xuan Zeng, Cui Hao, Yiran Zhang, Meng Zhang, Yong Liu, Hui Li, Juan Li, Lijuan Zhang
Ganoderma lucidum is an edible medicinal mushroom known as "Lingzhi" in China and "Reishi or Manetake" in Japan. It is a highly prized vitality-enhancing herb for more than 2000 years. G. lucidum polysaccharide (GLPS) has been identified as one of the major bioactive components and developed into a drug named "Ji 731 Injection" in China since 1973. The large-scale production of the drug began in 1985 and approved by the Chinese FDA as "Polysaccharidum of G. lucidum Karst Injection" (Ling Bao Duo Tang Zhu She Ye) in 2000, which is applied intramuscularly...
April 24, 2018: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29691973/homo-helical-rod-packing-as-a-path-toward-the-highest-density-of-guest-binding-metal-sites-in-metal-organic-frameworks
#9
Xiang Zhao, Matthew S Shimazu, Xitong Chen, Xianhui Bu, Pingyun Feng
In porous materials, metal sites with coordinate solvents offer opportunities for many applications, especially those promoted by host-guest chemistry, but such sites are especially hard to create for Li-based materials, because unlike transition metals, lithium does not usually possess a high-enough coordination number for both framework construction and guest binding. This challenge is addressed by mimicking the functional group ratio and metal-to-ligand charge ratio in MOF-74. A family of rod-packing lithium-organic frameworks (CPM-47, CPM-48, and CPM-49) were obtained...
April 25, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29691873/understanding-emulsifiers-effect-on-bread-aeration-during-breadmaking
#10
Raquel Garzón, Isabel Hernando, Empar Llorca, Cristina M Rosell
BACKGROUND: Much research has been done to explain emulsifiers action during breadmaking, but there is still plenty unknown to elucidate their functionality despite their diverse chemical structure. The aim of the present study was to provide some light about the role of emulsifiers on air incorporation into the dough and gas bubbles progress during baking and their relationship with bread features. Emulsifiers like diacetyl tartaric acid ester of monoglycerides (DATEM), sodium stearoyl lactylate (SSL), distilled monoglyceride (DMG-45 and DMG-75), lecithin and polyglycerol esters of fatty acids (PGEF) were tested in very hydrated doughs...
April 24, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29691826/supercritical-fluid-technology-as-a-tool-to-prepare-gradient-multifunctional-architectures-towards-regeneration-of-osteochondral-injuries
#11
Ana Rita C Duarte, Vitor E Santo, Manuela E Gomes, Rui L Reis
Platelet lysates (PLs) are a natural source of growth factors (GFs) known for its stimulatory role on stem cells which can be obtained after activation of platelets from blood plasma. The possibility to use PLs as growth factor source for tissue healing and regeneration has been pursued following different strategies. Platelet lysates are an enriched pool of growth factors which can be used as either a GFs source or as a three-dimensional (3D) hydrogel. However, most of current PLs-based hydrogels lack stability, exhibiting significant shrinking behavior...
2018: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29691811/chemico-calorimetric-analysis-of-amorphous-granules-manufactured-via-continuous-granulation-process
#12
Mridul Majumder, Saeid Rajabnezhad, Ali Nokhodchi, Mohammed Maniruzzaman
The current study explores the first case of the implementation of solution calorimetry (SolCal) in order to determine the amorphous content of crystalline benzoyl-methoxy-methylindol-acetic acid (BMA)-a model poorly soluble drug, in the amorphous granules prepared via single-step continuous twin-screw dry granulations (TSG). Amorphous magnesium aluminometasilicate (Neusilin®) (US2) was used as a novel inorganic carrier via a TwinLab 10 mm twin-screw extruder. The BMA/US2 blends were processed at 180 °C and varying drug: carrier ratios of 1:4, 1:2...
April 24, 2018: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/29691783/optimization-of-fixative-solution-for-retinal-morphology-a-comparison-with-davidson-s-fixative-and-other-fixation-solutions
#13
Kazuhiro Tokuda, Byron Baron, Yasuhiro Kuramitsu, Takao Kitagawa, Nobuko Tokuda, Naoyuki Morishige, Masaaki Kobayashi, Kazuhiro Kimura, Kazuyuki Nakamura, Koh-Hei Sonoda
PURPOSE: Numerous fixative solutions are available but many are not amenable to the histomorphological preservation of retinae. The investigators specifically focused on retinal histological studies, which rather than 4% formaldehyde (FA), often use Davidson's fixative. However the latter has its limitations. The purpose of this study was to produce a new fixative which maintains retinae closer to the in vivo conditions. STUDY DESIGN: Experimental design. METHODS: Four fixative formulations (4% paraformaldehyde, Davidson's fixative, modified Davidson's fixative and an in-house fixative - TB-Fix) were tested on retinae and the outcomes on histomorphology and immunohistochemical staining for selected antigenic markers was compared...
April 24, 2018: Japanese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29691769/long-term-effects-of-chemical-warfare-on-post-traumatic-stress-disorder-depression-and-chronic-medical-conditions-in-veterans
#14
Hamideh Safi-Aghdam, Mehrzad Shafie, Alireza Khoshdel, Ehsan Moazen-Zadeh, Farhad Avakh, Arash Rahmani
We investigated the association between exposure to chemical warfare and chronic mental/physical conditions. This was a secondary analysis of data from a case-control study on Iranian male veterans. Participants with neuropsychiatric disorders other than depressive/anxiety disorders, anatomical defects, or malignancies were excluded. Compared to non-exposed veterans, exposed veterans demonstrated significantly higher odds of PTSD [OR (95% CI) = 5.23 (1.98-13.85)], hypertension [OR (95% CI) = 5.57 (1.68-18...
April 24, 2018: Community Mental Health Journal
https://www.readbyqxmd.com/read/29691742/effects-of-mining-activities-on-evolution-of-water-chemistry-in-coal-bearing-aquifers-in-karst-region-of-midwestern-guizhou-china-evidences-from-%C3%AE-13-c-of-dissolved-inorganic-carbon-and-%C3%AE-34-s-of-sulfate
#15
Qingguang Li, Pan Wu, Xuefang Zha, Xuexian Li, Linna Wu, Shangyi Gu
The generation of acid mine drainage (AMD) may accelerate watershed erosion and promote the migration of heavy metals, then threaten local ecosystems such as aquatic life and even human health. Previous studies have focused primarily on influence of AMD in surface environment. In order to reveal the acidizing processes in karst high-sulfur coalfield in Southwest China, this study, by contrast, focused on the hydrogeochemical evolution process and acidification mechanism of mine water in Zhijin coalfield, western Guizhou Province...
April 24, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29691730/differentiation-of-dental-restorative-materials-combining-energy-dispersive-x-ray-fluorescence-spectroscopy-and-post-mortem-ct
#16
Tim Merriam, Rolf Kaufmann, Lars Ebert, Renato Figi, Rolf Erni, Robin Pauer, Till Sieberth
Today, post-mortem computed tomography (CT) is routinely used for forensic identification. Mobile energy-dispersive X-ray fluorescence (EDXRF) spectroscopy of a dentition is a method of identification that has the potential to be easier and cheaper than CT, although it cannot be used with every dentition. In challenging cases, combining both techniques could facilitate the process of identification and prove to be advantageous over chemical analyses. Nine dental restorative material brands were analyzed using EDXRF spectroscopy...
April 24, 2018: Forensic Science, Medicine, and Pathology
https://www.readbyqxmd.com/read/29691726/green-and-bio-based-solvents
#17
REVIEW
Francisco G Calvo-Flores, María José Monteagudo-Arrebola, José A Dobado, Joaquín Isac-García
Chemical reactions and many of the procedures of separation and purification employed in industry, research or chemistry teaching utilize solvents massively. In the last decades, with the birth of Green Chemistry, concerns about the employment of solvents and the effects on human health, as well as its environmental impacts and its dependence on non-renewable raw materials for manufacturing most of them, has drawn the attention of the scientific community. In this work, we review the concept of green solvent and the properties and characteristics to be considered green...
April 24, 2018: Topics in Current Chemistry (Journal)
https://www.readbyqxmd.com/read/29691666/hydroxamic-acid-derivatives-as-histone-deacetylase-inhibitors-a-dft-study-of-their-tautomerism-and-metal-affinities-selectivities
#18
D Cheshmedzhieva, N Toshev, M Gerova, O Petrov, T Dudev
Hydroxamic acids are regarded as potent inhibitors of histone deacetylases (HDAC), and can therefore be used to reduce malignancy growth and size in affected organisms. Although there is a substantial body of information on the structures, syntheses, and biological activities of HDAC inhibitors, several important questions regarding their physicochemical properties and metal affinities/selectivities remain answered. First, how do the conformation and ionization of the hydroxamic group depend on its chemical composition and the dielectric properties of the medium? Second, how do these factors affect the affinities and selectivities of HDAC inhibitors for essential biogenic metal cations? Third, what is the preferred deprotonation site of the hydroxamic moiety and its mode of binding to the metal cation? The present work addressed these questions by performing density functional calculations combined with polarizable continuum model computations...
April 24, 2018: Journal of Molecular Modeling
https://www.readbyqxmd.com/read/29691662/microleakage-of-composite-crowns-luted-on-cad-cam-milled-human-molars-a-new-method-for-standardized-in-vitro-tests
#19
Maximiliane Amelie Schlenz, Alexander Schmidt, Peter Rehmann, Thomas Niem, Bernd Wöstmann
OBJECTIVES: To investigate debonding of full crowns made of CAD/CAM composites, CAD/CAM technology was applied to manufacture standardized test abutments to increase the reproducibility of human teeth used in in vitro studies. MATERIALS AND METHODS: A virtual test abutment and the corresponding virtual crown were designed and two STL data sets were generated. Sixty-four human third molars and CAD/CAM blocks were milled using a CNC machine. Crowns of four different composite blocks (Lava Ultimate (LU), Brilliant Crios (BC), Cerasmart (CS), Experimental (EX)) were adhesively bonded with their corresponding luting system (LU: Scotchbond Universal/RelyX Ultimate; BC: One Coat 7 Universal/DuoCem; CS: G-PremioBond/G-Cem LinkForce; EX: Experimental-Bond/Experimental-Luting-Cement)...
April 24, 2018: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29691619/quantitative-multiparametric-mr-analysis-of-small-renal-lesions-correlation-with-surgical-pathology
#20
Motoyo Yano, Kathryn J Fowler, Santip Srisuwan, Amber Salter, Cary L Siegel
PURPOSE: The purpose of the study is to evaluate the utility of apparent diffusion coefficient (ADC), chemical shift signal intensity index (SII), and contrast enhancement in distinguishing between benign lesions and renal cell carcinoma (RCC) and between subtypes of renal lesions. METHODS: This retrospective study included 98 renal lesions (≤ 3 cm) on MRI with correlative surgical pathology. Scanner field strength, lesion location, and size were recorded. Two readers blinded to surgical pathology independently measured ADC ratio (ADC lesion/ADC non-lesion kidney), SII, and absolute/relative enhancement in the corticomedullary and nephrographic phases of contrast...
April 24, 2018: Abdominal Radiology
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