Several studies have demonstrated the effect of planting methods on rice yield, but information on the climate resources is limited. This study aims to reveal the effects of planting methods on ...climate resources associated with rice yield in a rice-wheat rotation system in the lower reaches of the Yangtze River, China. Field experiments were conducted in 2014 and 2015 with two japonica, two indica hybrid, and two japonica-indica hybrid varieties grown under three mechanized planting methods： carpet seedling of mechanical transplanting（CT）, mechanical direct seeding（DS）, and pot-hole seedling of mechanical transplanting（PT）. The rice yield and total dry matter under PT were greater than those under CT and DS methods. Besides, the entire growth duration and daily production showed significant positive relations with rice yield. Compared with CT and DS, the effective accumulated temperature and cumulative solar radiation of rice under PT were higher in phenological phases. In addition, the dry matter/effective accumulated temperature and solar energy utilization of rice under CT and DS were higher during vegetative phase and lower during reproductive and grain filling phases in contrast to PT. The mean daily temperature and mean daily solar radiation in the entire growth duration showed significant positive correlation with rice yield, total dry matter, and harvest index. This study demonstrated that when the mean daily temperature is 〈25.1°C in vegetative phase and 〉20.1°C in grain filling phase, rice yield could be increased by selecting mechanized planting methods. Most varieties under PT method exhibited high yield and climate resources use efficiency compared with CT and DS. In conclusion, the PT method could be a better cultivation measure for high rice yield, accompanied with high temperature and solar radiation use efficiency in a rice-wheat rotation system in the lower reaches of the Yangtze River, China.
In natural atmospheric situation, the laser impulse coupling coefficients for aluminium targets are measured on our piezoelectric sensor. The sandwich structure of the sensor is specially designed to ...enhance its response sensitivity. The relationship between the laser impulse and voltage signals of the sensor is given. The results show that when the laser pulse width is 10 ns, the radiation energy is 12·7 mJ and the beam spot area is 0·43 mm
2
, the laser impulse coupling coefficient C
m
has the maximum value which is 47·1×10
−5
kg·m·s
−1
J
−1
.
It is not easy to identify the cause of various iron overload diseases because the phenotypes overlap. Therefore, it is important to perform genetic testing to determine the genetic background of ...patients.
To investigate the genetic background of a patient with hemochromatosis complicated by psoriasis on both lower extremities.
Ten years ago, a 61-year-old male presented with iron overload, jaundice, hemolytic anemia and microcytic hypochromic anemia. Computed tomography of the left knee joint showed enlargement of the tibial medullary cavity and thinned bone cortices. Magnetic resonance imaging showed hepatic hemochromatosis, extensive abnormal signals from bone marrow cavities and nodular lesions in the lateral medullary cavity of the upper left lateral tibia. Single photon emission computed tomography showed radial dots of abnormal concentration in the upper end of the left tibia and radial symmetry of abnormal concentrations in joints of the extremities. The patient showed several hot spot mutations of the
and
genes detected by next-generation sequencing, but no responsible gene mutation was found. The thalassemia gene was detected by gap-PCR.
The patient was found to carry the -α
and --
deletion mutations of the globin gene. These two mutations are common causes of Southeast Asian α-thalassemia, but rarely cause severe widespread non-transfusion secondary hemochromatosis osteoarthropathy. The simultaneous presence of an auxiliary superposition effect of a rare missense mutation of the
gene (NM_001142864, c.C4748T, p.A1583V) was considered. Moreover, several rare mutations of the
and
genes may be involved in the pathogenesis of psoriasis.
The selection of genetic detection methods for hemochromatosis still needs to be based on an in-depth study of the clinical manifestations of the disease.
Byline: Jing LI, Wei-jie ZHU, Bao-guo XIE To investigate effects of clenbuterol (CLB) on the peroxisome proliferators-activated receptor gamma (PPARgamma) expression in adipose tissues of rats. ...Author Affiliation: (a) Department of Pathophysiology, Medical College, Jinan University, Guangzhou 510632, China (b) Department of Developmental and Regenerative Biology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China Article History: Received 2 March 2015 Article Note: (footnote) This study was supported by Science and Technology Planning Project of Guangzhou City, China (No. 201300000114)
Both salt rejection and pressure-bearing properties of the conventional thin film composite (TFC) polyamide reverse osmosis (RO) membrane are easily weakened at high temperature. In order to improve ...the high temperature resistance, in this work, a polyamide TFC RO membrane with covalent organic frameworks (COFs) intermediate layer was prepared. Firstly, the COFs layer was decorated on polyether sulfone (PES) support membrane by a unidirectional diffusion method and further modified for shrinking the micropore via the chemical crosslinking reaction with 1,3-diamino-2-propanol (DAPL) or ethylenediamine (EDA), and then continued the conventional interfacial polymerization of m-phenylene diamine (MPD) and trimesoyl chloride (TMC) on the resultant COFs layer for preparing the RO membrane. Furthermore, the correlationship between the microstructure of COFs layer and the separation performance of modified RO membrane was systematically investigated. Due to the introduction of the COFTpPa-DAPL intermediate layer with more regular microstructure and specific hydrophilicity, the resultant TFC-COFTpPa-DAPL RO membrane exhibited improvement in water flux by 30% (reached to 50.5 L·m-2·h-1) and higher salt rejection (>99.5%) as compared with the conventional polyamide RO membrane and other reported temperature resistance RO membranes. Meanwhile, this TFC-COFTpPa-DAPL membrane showed good long-term separation stability during the RO process for 160 h. Especially, its water flux increased to 98.8 L·m-2·h-1 without weakening salt rejection (about 99.4%) at 70 °C. This study provides an effective way to fabricate the high temperature resistance TFC polyamide RO membrane with good comprehensive separation performance based on COFs intermediate layer.
A novel kind of covalent organic frameworks (COFs) intermediate layer was prepared with 1,3,5-triformylphloroglucinol (Tp) and p-Phenylenediamine (Pa) through the interfacial Schiff base polycondensation reaction on the polyethersulfone (PES) via the unidirectional diffusion method and further modified with DAPL for micropore shrinking via crosslinking reaction. Then the new thin-film composite (TFC) reverse osmosis (RO) membrane was fabricated on this resultant COFTpPa-DAPL intermediate layer via the conventional interfacial polymerization of m-phenylene diamine (MPD) and trimesoyl chloride (TMC). Due to the more regular microstructure, good thermal stability and specific hydrophilicity, the introduction of COFTpPa-DAPL intermediate layer endowed the modified RO membrane better comprehensive separation performance, favorable long-term separation stability as well as better high temperature resistance at 70°C as compared to the conventional commercialized polyamide TFC RO membrane and other reported temperature resistance RO membrane. Display omitted
Glomerular mesangial cells (GMCs) activation is implicated in the pathogenesis of diabetic nephropathy (DN). Our previous study revealed that high glucose (HG)-treated glomerular endothelial cells ...(GECs) produce an increased number of TGF-Formula: see text1-containing exosomes to activate GMCs through the TGF-Formula: see text1/Smad3 signaling pathway. We also identified that Tongxinluo (TXL), a traditional Chinese medicine, has beneficial effects on the treatment of DN in DN patients and type 2 diabetic mice. However, it remained elusive whether TXL could ameliorate renal structure and function through suppression of intercellular transfer of TGF-Formula: see text1-containing exosomes from GECs to GMCs. In this study, we demonstrate that TXL can inhibit the secretion of TGF-Formula: see text1-containing exosomes from HG-treated GECs. Furthermore, exosomes produced by HG induced-GECs treated with TXL cannot trigger GMC activation, proliferation and extracellular matrix (ECM) overproduction both in vitro and in vivo. These results suggest that TXL can prevent the transfer of TGF-Formula: see text1 from GECs to GMCs via exosomes, which may be one of the mechanisms of TXL in the treatment of DN.
Fluorapatite with low solubility is a promising biomaterial due to its structure, which is similar to hydroxyapatite. In this study a bioactive composite of nanofluorapatite (n-FA) and polyamide 12 ...(PA12) was fabricated. The results revealed that the mechanical properties (such as compressive strength and elastic modulus), hydrophilicity, and antibacterial properties of n-FA/PA12 composite were obviously improved by adding n-FA into PA12 as compared with PA12. In addition, cell proliferation of MC3T3-E1 cells cultured on n-FA/PA12 composite was significantly higher than with PA12, and alkaline phosphatase activity of MC3T3-E1 cells on the n-FA/PA12 composite was expressed at obviously higher levels as compared with PA12. The results suggest that n-FA/PA12 composite could support cell proliferation and differentiation, showing good cytocompatibility. Histological evaluation indicates that n-FA/PA12 composite enhances the efficiency of new bone formation with the introduction of n-FA into PA12, and the quantity of the newly formed bone for n-FA/PA12 composite is significantly higher than with PA12. In conclusion, n-FA/PA12 composite exhibits good biocompatibility and osteogenesis, which might be used for various orthopedic prostheses and dental implants.
PDF
