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Effects of Inorganic Sodium Salt in Soil on Concentration of Zinc Ion in Different Patterns
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作者 梁佩玉 王祖伟 +3 位作者 李伟克 谭咏洁 陈丽君 吴庭禄 《Agricultural Science & Technology》 CAS 2012年第3期578-582,共5页
[Objective] The aim was to study on effects of inorganic sodium salt in soil on concentration of zinc ion in different patterns. [Method] Tessier sequential extraction was used to study on effects of inorganic sodium ... [Objective] The aim was to study on effects of inorganic sodium salt in soil on concentration of zinc ion in different patterns. [Method] Tessier sequential extraction was used to study on effects of inorganic sodium salts (in different species and different concentrations) on concentration of zinc ion in different patterns. [Result] Different inorganic sodium salts had different effects on zinc form. Content of ex- changeable Zn would reduce if Na2CO3 or Na2SO4 was added and the content would increase if NaCI was added. Content of carbonate zinc, which was significantly influ- enced by Na2SO4, would increase if NaCI or Na2SO4 was added, and would decrease if Na2CO3 was added. For Zn bound to Fe-Mn oxides and organic matters, and residual Zn, the contents would decrease if NaCI or Na2SO4 was added and the decrease showed much more significantly if high concentration sodium salts were added. In addition, content of Zn bound to Fe-Mn oxides decreased if Na2CO3 was added. If low concentration Na2CO3 was added, Zn bound to organic matters and residual would increase in content but would lower if high concentration one was added. [Conclusion] The research provided references for measurement of heavy metal ion content in soil in different places. 展开更多
关键词 SOIL Inorganic sodium salt Znic ion in different forms
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1-Heptanesulfonic acid sodium salt:One pot efficient synthesis of 2-aryl-1-arylmethyl-1H-1,3-benzo[d]imidazoles 被引量:1
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作者 Ganesh R.Jadhav Mohammad U.Shaikh +1 位作者 Rajesh P Kale Charansingh H.Gill 《Chinese Chemical Letters》 SCIE CAS CSCD 2009年第5期535-538,共4页
Synthesis of 2-aryl-1-arylmethyl-1H-1,3-benzo[d]imidazoles by the reaction of o-phenylenediamine with substituted aromatic aldehydes in the presence of 1-heptanesulfonic acid sodium salt (10 mol%) at room temperatur... Synthesis of 2-aryl-1-arylmethyl-1H-1,3-benzo[d]imidazoles by the reaction of o-phenylenediamine with substituted aromatic aldehydes in the presence of 1-heptanesulfonic acid sodium salt (10 mol%) at room temperature. The reactions were performed in acetonitrile:water (8:2). The method was proved to be eco-friendly, convenient and the products were isolated with good yields (82- 90%). 展开更多
关键词 1-Heptanesulfonic acid sodium salt Water Aryl aldehyde BENZIMIDAZOLE
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Pentacoordinated Spirophosphoranes from Amino Acid Sodium Salts
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作者 Hai Yan LU Nan Jing ZRANG Yu Fen ZRAO(Bioorganic Phosphorus Chemistry Laboratory, Dcyartinen of ChemistryTsinghua Uhiverslty, Beijing, 100084) 《Chinese Chemical Letters》 SCIE CAS CSCD 1997年第5期397-400,共4页
The reactions of 2-chloro-1,3,2-dioxaphospholane with various sodium salts of amino acids to afford the pentacoordinated spirophosphoranes containing amino acid were studied by NMR spectra techniques. The results show... The reactions of 2-chloro-1,3,2-dioxaphospholane with various sodium salts of amino acids to afford the pentacoordinated spirophosphoranes containing amino acid were studied by NMR spectra techniques. The results showed that natural alpha-amino acids had greater ability than beta-amino acids to form the pentacoordinated species, which is important in the biosynthesis and prebiotic synthesis of of oligopeptides and proteins. 展开更多
关键词 Pentacoordinated Spirophosphoranes from Amino Acid sodium salts LI
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Synthesis and Antiplatelet Activity of Alkyl Salicylates Sodium Salts
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作者 Anatoli Kuzmich Brel' Svetlana Viktorovna Lisina 《材料科学与工程(中英文A版)》 2012年第9期624-628,共5页
关键词 烷基水杨酸盐 血小板聚集 钠盐 合成 水杨酸戊酯 血液流变学 活性 阿司匹林
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Supplementation with dimethylglycine sodium salt improves lipid metabolism disorder in intrauterine growth-retarded pigs
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作者 Kaiwen Bai Luyi Jiang Tian Wang 《Animal Nutrition》 SCIE CAS CSCD 2024年第3期191-202,共12页
This study aims to elucidate the mechanism of lipid metabolism disorder in intrauterine growth retardation(IUGR)pigs and the potential alleviating effects of dimethylglycine sodium salt(DMG-Na).A total of 60 male newb... This study aims to elucidate the mechanism of lipid metabolism disorder in intrauterine growth retardation(IUGR)pigs and the potential alleviating effects of dimethylglycine sodium salt(DMG-Na).A total of 60 male newborn piglets were selected for this study.Within each litter,one normal birth weight(NBW)male piglet(1.53±0.04 kg)and two IUGR male piglets(0.76±0.06 kg)were chosen based on their birth weight.The piglets were divided into three groups for the study:NBW pigs received a PBS gavage and a common basal diet(NBW-C group),IUGR pigs received the same PBS gavage and common basal diet(IUGR-C group),and IUGR pigs received a 70-mg DMG-Na gavage along with a common basal diet supplemented with 0.1%DMG-Na(IUGR-D group).At 150 d of age,all piglets underwent euthanasia by exsanguination following electrical stunning,after which plasma,liver,and longissimus dorsi(LM)samples were promptly collected.The IUGR-D group demonstrated improvements in plasma parameters(P<0.05),with lower triglyceride and free fatty acid(FFA)values,and hormone levels(P<0.05),with lower growth hormone,insulin,and homeostasis model assessment of insulin resistance values.Restoration of lipid metabolism was observed(P<0.05),with lower triglyceride and FFA,and higher hepatic lipase and total lipase values in the liver,and lower triglyceride and FFA values in the LM.Mitochondrial ETC complexes showed increased levels(P<0.05),including higher complex III values in the liver,and higher complex I,complex III,and complex V values in the LM.Enhanced levels of energy metabolites were noted(P<0.05),with higher NAD^(+),NAD^(+)/NADH,adenosine triphosphate,and mtDNA values,and lower NADH values in the liver and LM.Additionally,meat quality parameters showed improvement(P<0.05),with higher pH 24 h and a^(*)values,and lower drip loss 48 h,L^(*),and b^(*)values.The expressions of lipid metabolism and mitochondrial function-related genes and proteins were upregulated(P<0.05)compared to the IUGR-C group.In conclusion,it was indicated that IUGR pigs experienced lipid metabolism disorders and diminished performance.However,supplementation with DMG-Na showed promise in mitigating these adverse physiological effects by safeguarding body tissues and modulating energy metabolism. 展开更多
关键词 Intrauterine growth retardation PIG Lipid metabolism Mitochondrial function Dimethylglycine sodium salt
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Knowledge, Attitudes and Practices of the Populations of Dapaong and Its Surroundings in Togo on Sodium/Salt and Potassium Intakes
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作者 Tchasso Serge Kenao Jerôme Charles Sossa +7 位作者 Moussiliou Noel Paraiso Mofou Belo Mouawiyatou Bouraima Ghislain Sopoh Smaila Alidou Dadja Essoya Landoh Assima-Essodom Kalao Victoire Agueh 《Open Journal of Epidemiology》 2023年第2期113-127,共15页
Background: Food plays an important role in human health. A healthy diet contributes to the improvement of the health of populations. A diet high in sodium/salt and low in potassium has been shown to contribute to car... Background: Food plays an important role in human health. A healthy diet contributes to the improvement of the health of populations. A diet high in sodium/salt and low in potassium has been shown to contribute to cardiovascular disease. The objective of this study was to assess the knowledge, attitudes and practices (KAP) of the inhabitants of Dapaong and its surroundings on dietary intakes of sodium/salt and potassium. Methods: This was a cross-sectional study conducted from 1 November to 15 December 2022 involving 400 adults aged 25 to 44 years. Sampling was done using the probability method and the multistage random sampling technique with proportional allocation. These two methods were applied to select villages, households, and primary targets in each locality according to whether the area of residence was urban or rural. The electronic kobocollect questionnaire was administered to people in households and the interview guide was to resource persons, administrators and community leaders to collect the data. Results: Overall, 80.25% of the respondents had low knowledge of sodium/salt intakes;88.50% had poor attitudes towards the use of foods that provide more sodium/salt and 92.75% had behaviours that were not conducive to reducing excessive salt consumption. With regard to potassium, the same trend was observed in the order of 91%, 72% and 73.75%. Conclusion: The KAP levels of the people studied were not good. The populations are prone to cardiovascular disease. A multisectoral nutritional intervention would be essential to improve the knowledge of the populations on sodium/salt and potassium intakes and therefore favourable to the fight against CVD/NCD. 展开更多
关键词 KAP sodium/salt POTASSIUM TOGO
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Knowledge, Attitudes, Practices, and Perceptions for Salt/Sodium Reduction in the Gastronomic Sector of Costa Rica
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作者 Hilda P. Núñez-Rivas Marlene Roselló-Araya +2 位作者 Adriana Blanco-Metzler Benavides-Aguilar Karla Karol Madriz-Morales 《Food and Nutrition Sciences》 2023年第11期1094-1118,共25页
Excess sodium intake is associated with high blood pressure and cardiovascular diseases. This study examined food services in Costa Rica as a major source of sodium. The research included six cafeterias, six fast food... Excess sodium intake is associated with high blood pressure and cardiovascular diseases. This study examined food services in Costa Rica as a major source of sodium. The research included six cafeterias, six fast food establishments, 13 restaurants, and 15 diners using non-probabilistic convenience sampling. Interviews were conducted with workers to assess knowledge, attitudes, and practices regarding salt reduction. The findings were analyzed to determine effective intervention strategies. Participants showed regular knowledge about salt/sodium. While they recognized the link with high blood pressure, understanding of other health problems was limited. Positive attitudes were observed toward healthy cooking and reducing sodium in pre-prepared food, especially in restaurants. Over 70% expressed a desire to reduce salt in food services, with more than 80% indicating a need for staff training, particularly in cafeterias lacking knowledge of low-salt preparations. High-sodium ingredients were prevalent, with saltshakers and sauces readily available. However, some individuals were reluctant to reduce salt/sodium intake, citing concerns about taste, food variety, and customer complaints. Obstacles to reducing salt/sodium levels included limited accessibility and the cost of low-sodium ingredients. The data collection tools and methodologies used in this study can serve as a foundation for future investigations and strategies to reduce salt consumption in food services. The study recommends government support for transforming the gastronomic sector and implementing regulations and knowledge enhancement. Collaboration with the productive sector is crucial for creating healthy environments. This research presents valuable evidence regarding the utilization of salt and sodium in the gastronomic sector, thereby assisting in the decision-making process for public health initiatives and the prevention of non-communicable chronic diseases. It highlights the significance of tackling sodium reduction in food services to encourage the adoption of healthy culinary practices and enhance the overall health of the population. 展开更多
关键词 salt sodium Gastronomic Sector Food Environment KNOWLEDGE ATTITUDES PRACTICES PERCEPTIONS Non-Communicable Chronic Diseases
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Polyacrylic acid sodium salt film entrapped Ag-nanocubes as molecule traps for SERS detection 被引量:6
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作者 Zhulin Huang Guowen Meng +7 位作者 Qing Huang Bin Chen Fei Zhou Xiaoye Hu Yiwu Qian Haibin Tang Fangming Han Zhaoqin Chu 《Nano Research》 SCIE EI CAS CSCD 2014年第8期1177-1187,共11页
Surface-enhanced Raman spectroscopy (SERS) is a fast analytical technique for trace chemicals; however, it requires the active SERS-substrates to adsorb analytes, thus limiting target species to those with the desir... Surface-enhanced Raman spectroscopy (SERS) is a fast analytical technique for trace chemicals; however, it requires the active SERS-substrates to adsorb analytes, thus limiting target species to those with the desired affinity for substrates. Here we present networked polyacrylic acid sodium salt (PAAS) film entrapped Ag-nanocubes (denoted as Ag-nanocubes@PAAS) as an effective SERS-substrate for analytes with and without high affinity. Once the analyte aqueous solution is cast on the dry Ag-nanocubes@PAAS substrate, the bibulous PAAS becomes swollen forcing the Ag-nanocubes loose, while the analytes diffuse in the interstices among the Ag-nanocubes. When dried, the PAAS shrinks and pulls the Ag-nanocubes back to their previous aggregated state, while the PAAS network "detains" the analytes in the small gaps between the Ag-nanocubes for SERS detection. The strategy has been proven effective for not only single- analytes but also multi-analytes without strong affinity for Ag, showing its potential in SERS-based simultaneous multi-analyte detection of both adsorbable and non-adsorbable pollutants in the environment. 展开更多
关键词 SERS Ag-nanocube polyacrylic acid sodium salt trace detection
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Methanesulfonic acid sodium salt protects retina from acute light damage in mice 被引量:1
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作者 WANG Hai-yan GU Qing XU Xun 《Chinese Medical Journal》 SCIE CAS CSCD 2012年第13期2310-2315,共6页
Background Methanesulfonic acid sodium salt (Dipyrone), an antipyretic and analgesic drug, has been demonstrated to improve cerebral ischemia through the inhibition of mitochondrial cell death cascades. The aim of t... Background Methanesulfonic acid sodium salt (Dipyrone), an antipyretic and analgesic drug, has been demonstrated to improve cerebral ischemia through the inhibition of mitochondrial cell death cascades. The aim of this study was to evaluate the potential photoprotective activity of methanesulfonic acid sodium salt in a model of light-induced retinopathy. Methods One hundred mice were assigned randomly into vehicle (V), methanesulfonic acid sodium salt (D), light damage model plus vehicle (MV) and light damage model plus methanesulfonic acid sodium salt (MD) groups (n=25 each). In the MD group, methanesulfonic acid sodium salt (100 mg/kg) was administered by intraperitoneal injection 30 minutes before light exposure. Twenty-four hours after light exposure, hematoxylin and eosin staining and transmission electron microscopy (TEM) were used for histological evaluation. The thickness of the outer plus inner-segment and outer nuclear layer was measured on sections parallel to the vertical meridian of the eye at a distance of 1000 I^m from the optic nerve. Electroretinography (ERG) test was performed to assess the functional change. The morphology of mitochondria was also revealed by TEM. Finally, the expression of cytochrome c (CytC) and the relative apoptotic proteins were detected by Western blotting, and the interaction between mitochondrial proteins was investigated by co-immunoprecipitation. Results The photoreceptor inner and outer segments of the MV group were significantly disorganized than the MD group. The thicknesses of the outer plus inner-segment layers and the outer nuclear layer, and the amplitudes of the a and b waves of the scotopic ERG response markedly decreased in the MV group compared to those in the MD group (P 〈0.05). TEM examination revealed that the mitochondria of the MV group were distinctly swollen and contained disrupted cristae. In contrast, the morphology of mitochondria in the MD group was unaffected. Western blotting analysis showed that CytC, apoptosis proteinase activating factor-1 (Apaf-1), caspase 3, p53, p53-upregulated modulator of apoptosis (PUMA), Bax, and Bad were increased, whereas the anti-apoptotic proteins Bcl-2 and Bcl-XL were significantly decreased in the MV group than the MD group. Co-immunoprecipitation detection revealed that PUMA immunoreactivity precipitated by Bcl-XL decreased, whereas Bax immunoreactivity precipitated by Bcl-XL increased in the MD group compared to those in the MV group. Conclusion Methanesulfonic acid sodium salt is an effective photoprotective agent against light-induced retinopathy through the inhibition of CytC-mediated mitochondrial impairment. 展开更多
关键词 methanesulfonic acid sodium salt light damage MITOCHONDRIA APOPTOSIS p 5 3-upregulated modulator of apoptosis
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Dietary dimethylglycine sodium salt supplementation alleviates redox status imbalance and intestinal dysfunction in weaned piglets with intrauterine growth restriction 被引量:1
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作者 Kaiwen Bai Luyi Jiang +3 位作者 Qiming Li Jingfei Zhang Lili Zhang Tian Wang 《Animal Nutrition》 SCIE CSCD 2022年第3期188-197,共10页
There are few studies on the mechanism of redox status imbalance and intestinal dysfunction in intrauterine growth restricted(IUGR)newborn piglets.Here,we investigated the mechanism of jejunum dysfunction in weaned pi... There are few studies on the mechanism of redox status imbalance and intestinal dysfunction in intrauterine growth restricted(IUGR)newborn piglets.Here,we investigated the mechanism of jejunum dysfunction in weaned piglets with IUGR and the mechanism through which dimethylglycine sodium salt(DMG-Na)supplementation improving the imbalance of their redox status.In this work,a total of 10 normal birth weight(NBW)newborn piglets and 20 IUGR newborn piglets were obtained.After weaning at 21 d,they were assigned to 3 groups(n=10/group):NBW weaned piglets fed standard basal diets(NBWC);one IUGR weaned piglets fed standard basal diets(IUGRC);another IUGR weaned piglets from the same litter fed standard basal diets plus 0.1%DMG-Na(IUGRD).The piglets in these 3 groups were sacrificed at 49 d of age,and the blood and jejunum samples were collected immediately.The growth performance values in the IUGRC group were lower(P<0.05)than those in the NBWC group.Jejunum histomorphological parameters,inflammatory cytokines,and digestive enzyme activity as well as serum immunoglobulin were lower(P<0.05)in the IUGRC group than those in the NBWC group.Compared with these in the NBWC group,the redox status of serum,jejunum,and mitochondria and the expression levels of jejunum redox status-related,cell adhesion-related,and mitochondrial function-related genes and proteins were suppressed in the IUGRC group(P<0.05).However,compared with those in the IUGRC group,the growth performance values,jejunum histomorphological parameters,inflammatory cytokines,digestive enzyme activity,serum immunoglobulin,redox status of serum,jejunum,and mitochondria,and the expression levels of jejunum redox status-related,cell adhesion-related,and mitochondrial function-related genes and proteins were improved(P<0.05)in the IUGRD group.In conclusion,dietary DMG-Na supplementation alleviates redox status imbalance and intestinal dysfunction in IUGR weaned piglets mainly by activating the sirtuin 1(SIRT1)/peroxisome proliferatoractivated receptorgcoactivator-1a(PGC1a)pathway,thereby improving their unfavorable body state. 展开更多
关键词 Intrauterine growth restriction Weaned piglet JEJUNUM Redox status Mitochondrial function Dimethylglycine sodium salt
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Treatment of immune dysfunction in intrauterine growth restriction piglets via supplementation with dimethylglycine sodium salt during the suckling period 被引量:1
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作者 Kaiwen Bai Luyi Jiang +1 位作者 Tian Wang Wei Wang 《Animal Nutrition》 SCIE CSCD 2022年第4期215-227,共13页
This study aimed to investigate the mechanism of small intestinal immune dysfunction in intrauterine growth restriction(IUGR)newborn piglets and relieve this dysfunction via dimethylglycine sodium salt(DMG-Na)suppleme... This study aimed to investigate the mechanism of small intestinal immune dysfunction in intrauterine growth restriction(IUGR)newborn piglets and relieve this dysfunction via dimethylglycine sodium salt(DMG-Na)supplementation during the suckling period.Thirty sows(Duroc×[Landrace×Yorkshire])were selected,and 1 male newborn piglet with normal birth weight(NBW)and 1 male newborn piglet with IUGR were obtained from each sow.Among them,10 NBW and 10 IUGR newborns were euthanized without suckling.The other 20 NBW newborns were allocated to the group named NCON,which means NBW newborns fed a basic milk diet(BMD)(n=10),and the group named ND,which means NBW newborns fed BMD supplemented with 0.1%DMG-Na(n=10);the other 20 IUGR newborns were assigned to the group named ICON,which means IUGR newborns fed BMD(n=10),and the group named ID,which means IUGR newborns fed BMD supplemented with 0.1%DMG-Na(n=10).The newborns were fed BMD from 7 to 21 d of age and euthanized at 21 d of age to collect serum and small intestinal samples.The growth performance,small intestinal histological morphology and sub-organelle ultrastructure,serum immunoglobulin,small intestinal digestive enzyme activity,inflammatory cytokine level,and jejunum mRNA and protein expression of the toll-like receptor 4(TLR4)/nucleotide-binding oligomerization domain protein(NOD)/nuclear factor-k B(NF-k B)network deteriorated in the ICON group compared to that in the NCON group.The small intestinal histological morphology and suborganelle ultrastructure,serum immunoglobulin,small intestinal digestive enzyme activity,and inflammatory cytokine level improved(P<0.05)in the ID group compared to those in the ICON group.The jejunum mRNA and protein expression of the TLR4/NOD/NF-k B network improved(P<0.05)in the ID group compared to that in the ICON group.In conclusion,the activity of the TLR4/NOD/NF-k B pathway was inhibited in the IUGR newborns,which in turn led to their jejunum immune dysfunction and reduced their performance.By ingesting DMG-Na,the IUGR newborns activated the TLR4/NOD/NF-k B pathway,thereby improving their unfavorable body state during the suckling period. 展开更多
关键词 Intrauterine growth restriction PIGLET Small intestine Immune dysfunction Dimethylglycine sodium salt
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One-step synthesis of α,β-unsaturated arylsulfones by a novel multicomponent reaction of aromatic aldehydes,chloroacetonitrile,benzenesulfinic acid sodium salt 被引量:1
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作者 Lei Zhang Mao Hua Ding Hong Yun Guo 《Chinese Chemical Letters》 SCIE CAS CSCD 2012年第12期1352-1354,共3页
A new and green method for the synthesis of α,β-unsaturated arylsulfones had been achieved through the condensation of aromatic aldehydes, chloroacetonitrile, benzenesulfinic acid sodium salt in the presence of 1-bu... A new and green method for the synthesis of α,β-unsaturated arylsulfones had been achieved through the condensation of aromatic aldehydes, chloroacetonitrile, benzenesulfinic acid sodium salt in the presence of 1-butyl-3-methyl imidazolium hydroxide ([bmim]OH) in EtOH under reflux. The ionic liquid was recovered and recycled for subsequent reactions. The advantages of this protocol were non-toxic, easy work-up and good yields. 展开更多
关键词 Ionic liquids Benzenesulfinic acid sodium salt α β-Unsaturated arylsulfones
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l-Hexanesulphonic acid sodium salt promoted the one-pot synthesis of amidoalkyl naphthols under microwave-irradiation
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作者 Kirti S.Niralwad Bapurao B.Shingate Murlidhar S.Shingare 《Chinese Chemical Letters》 SCIE CAS CSCD 2011年第5期551-554,共4页
Amidoalkyl naphthols have been synthesized in high yields in the presence of 1-hexanesulphonic acid sodium salt as an inexpensive solid catalyst under solvent-free conditions and microwave-irradiation.This catalyst pr... Amidoalkyl naphthols have been synthesized in high yields in the presence of 1-hexanesulphonic acid sodium salt as an inexpensive solid catalyst under solvent-free conditions and microwave-irradiation.This catalyst provides clean conversion;greater selectivity and easy workup make this protocol practical and economically attractive. 展开更多
关键词 ALDEHYDES NAPHTHOLS 1-Hexanesulphonic acid sodium salt Amidoalkyl naphthols MICROWAVE-IRRADIATION
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MODIFICATION OF SODIUM SALT OF PARTIALLY CARBOXYMETHYLATED TAMARIND KERNEL POWDER THROUGH GRAFTING WITH ACRYLONITRILE: SYNTHESIS, CHARACTERIZATION AND SWELLING BEHAVIOR
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作者 J.H.Trivedi J.R.Jivani +1 位作者 K.H.Patel H.C.Trivedi 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2013年第12期1670-1684,共15页
A graft copolymer of polyacrylonitrile (PAN) with sodium salt of partially carboxymethylated tamarind kernel powder (Na-PCMTKP, DS ^-= 0.15) was synthesized by using ceric ammonium nitrate (CAN) as a redox initi... A graft copolymer of polyacrylonitrile (PAN) with sodium salt of partially carboxymethylated tamarind kernel powder (Na-PCMTKP, DS ^-= 0.15) was synthesized by using ceric ammonium nitrate (CAN) as a redox initiator in an aqueous medium. The optimum reaction conditions for affording maximum percentage of grafting were established by successively varying reaction conditions such as concentrations of nitric acid, CAN, monomer (AN) as well as reaction time, temperature and amount of substrate. The influence of these reaction conditions on the grafting yields was discussed. The kinetic scheme of free radical graft copolymerization was proposed and the experimental results were found to agree very well with the proposed kinetic scheme. The graft copolymer (Na-PCMTKP-g-PAN, percentage of grafting G = 413.76% and percentage of grafting efficiency GE = 96.48%) sample synthesized under the established optimized reaction conditions was hydrolyzed by 0.7 mol-L l NaOH solution at 90-95 ℃ to yield the superabsorbent hydrogel, H-Na-PCMTKP-g-PAN. The swelling behavior of the hydrogel was studied by carrying out its absorbency measurements in low conductivity water, 0.15 mol·L^-1 salt (NaCl, CaCl2 and AlCl3) solutions and simulated urine (SU) solution at different timings. FTIR, TGA and SEM techniques were used to characterize the products. 展开更多
关键词 sodium salt of partially carboxymethylated tamarind kernel powder ACRYLONITRILE Graft copolymerization Superabsorbent hydrogels Swelling behavior.
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Photo-induced Synthesis and Characterization of Poly(methyl methacrylate) Grafted Sodium Salt of Partially Carboxymethylated Guar Gum
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作者 J.H.Trivedi M.D.Thaker H.C.Trivedi 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2014年第12期1690-1703,共14页
Photo-induced graft copolymerization of methyl methacrylate(MMA) onto sodium salt of partially carboxymethylated guar gum(Na-PCMGG, DS = 0.291) was carried out in an aqueous medium using ceric ammonium nitrate(CA... Photo-induced graft copolymerization of methyl methacrylate(MMA) onto sodium salt of partially carboxymethylated guar gum(Na-PCMGG, DS = 0.291) was carried out in an aqueous medium using ceric ammonium nitrate(CAN) as photoinitiator to synthesize a novel graft copolymer, Na-PCMGG-g-PMMA, which may find its potential application as a metal adsorbent. The influences of synthesis variables such as concentrations of photoinitiator(CAN), nitric acid and monomer(MMA) as well as reaction time, temperature and amount of substrate on the grafting yields were studied and the reaction conditions for optimum photo-grafting were evaluated. At optimum concentration, the maximum values of the grafting yields achieved were G = 271.61% and GE = 63.89%. The experimental results were found to be in very good agreement with the proposed kinetic scheme. The photo-graft copolymerization of MMA onto Na-PCMGG( DS = 0.291) was also carried out in the presence and absence of ultraviolet radiation for studying the efficiency of the photoinitiator. The influence of carboxymethyl groups introduced onto the guar gum molecules with regard to its behavior towards ultra-violet radiation induced grafting with MMA was also investigated. Photo-grafting process was confirmed and the products were characterized with the help of the spectroscopic(1H-NMR and FTIR) and SEM techniques. 展开更多
关键词 Photo-induced grafting Methyl methacrylate sodium salt of partially carboxymethylated guar gum Optimum reaction conditions Characterization.
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Analysis of the relationship between 24-hour sodium and blood pressure and the dietary status based on mobile phone APP in the high-risk population of hypertension in Haikou
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作者 CHEN Jun-cai YAN You-xuan +2 位作者 LIN Liu-ting ZHAO Chan-juan ZHANG Fan 《Journal of Hainan Medical University》 CAS 2023年第10期35-42,共8页
Objective:To understand the dietary intake of high-risk population with hypertension in Haikou,and to analyze the relationship between dietary intake and blood pressure,especially the relationship between sodium intak... Objective:To understand the dietary intake of high-risk population with hypertension in Haikou,and to analyze the relationship between dietary intake and blood pressure,especially the relationship between sodium intake and blood pressure,so as to provide a scientific basis for salt reduction.Methods:A multi-stage cluster sampling 2021 was used from July to December to collect 3-4 cscs from each of the four districts in Haikou.A total of 15 cscs were collected,295 permanent residents aged 55-74 were recruited from 15 community service centers,with 20 eligible subjects from each community.The subjects underwent general physical examination,laboratory tests,and a dietary survey using the self-developed Android phone APP“Nutrition Assistant”(registration number:2021SR1547832).SPSS 21.0 was used 2 for t test,x^(2) test and multiple Regression analysis.Result:In Haikou,69.4%of the subjects had energy intake above energy requirement,and 44.8%had fat intake above the acceptable range of macronutrients.There were only differences in energy,carbohydrate,vitamin B 6 and sodium intake(t=-2.174,-1.990,2.333,-5.442,P=0.031,0.048,0.021,<0.001,respectively).There were significant differences in BMI,family history of chronic diseases,systolic blood 2 pressure and diastolic blood pressure(f value or x^(2) value were 4.260,19.045,139.916,36.864,P value were 0.015,<0.001,<0.001,<0.001,respectively).Multiple Regression analysis analysis showed that 24h sodium excretion was significantly correlated with systolic and diastolic blood pressure(t=12.964,P<0.001),systolic and diastolic blood pressure increased by 0.135 mmhg and 0.068 mmhg,respectively.Conclusion:The dietary intake of the middle-aged and elderly people at high risk of hypertension in the Haikou community was unbalanced,and the intake of sodium salt was strongly correlated with blood pressure,it is necessary to continue to promote salt reduction as one of the key ways to prevent and control hypertension. 展开更多
关键词 DIET Blood pressure High-risk population sodium salt
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Precise carbon structure control by salt template for high performance sodium-ion storage 被引量:7
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作者 Dong Qiu Tengfei Cao +6 位作者 Jun Zhang Si-Wei Zhang Dequn Zheng Haoliang Wu Wei Lv Feiyu Kang Quan-Hong Yang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2019年第4期101-106,共6页
Carbon materials are considered to be one of the most promising anode materials for sodium-ion batteries(SIBs),but the well-ordered graphitic structure limits the intercalation of sodium ions.Besides,the sluggish inte... Carbon materials are considered to be one of the most promising anode materials for sodium-ion batteries(SIBs),but the well-ordered graphitic structure limits the intercalation of sodium ions.Besides,the sluggish intercalation kinetics of sodium ions impedes the rate performance.Thus,the precise structure control of carbon materials is important to improve the battery performance.Herein,a 3D porous hard-soft composite carbon(3DHSC)was prepared using the NaCl as the template and phenolic resin and pitch as carbon precursors.The NaCl template restrains the growth of the graphite crystallite during the carbonization process,resulting in small graphitic domains with expanded interlayer spacing which is favorable for the sodium storage.Moreover,the Na Cl templates help to create abundant mesopores and macropores for fast sodium ion diffusion.The porous structure and the graphite crystalline structure can be precisely controlled by simply adjusting the mass ratio of Na Cl,and thus,the suitable structure can be prepared to reach high capacity and rate performance while keeping a relatively high Coulombic efficiency.Typically,a high reversible capacity(215 mA h g^(-1)at 0.05 A g^(-1)),an excellent rate capability(97 mA h g^(-1)at 5 A g^(-1)),and a high initial Coulombic efficiency(60%)are achieved. 展开更多
关键词 sodium-ion batteries salt-template 3D porous hard-soft composite carbon ANODE Electrochemical performance
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Rapid Microwave-promoted Base-free Suzuki Coupling Reaction of Sodium Tetraphenylborate with Hypervalent Iodonium Salts in Water 被引量:1
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作者 Jie YAN Zhong Shi ZHOU Min ZHU 《Chinese Chemical Letters》 SCIE CAS CSCD 2006年第4期473-476,共4页
The palladium chloride-catalyzed Suzuki coupling reaction of sodium tetraphenylborate with hypervalent iodonium salts was achieved under microwave irradiation in water without base in excellent yield. A convenient and... The palladium chloride-catalyzed Suzuki coupling reaction of sodium tetraphenylborate with hypervalent iodonium salts was achieved under microwave irradiation in water without base in excellent yield. A convenient and rapid method for formation of carbon-carbon bonds was afforded. 展开更多
关键词 Suzuki reaction sodium tetraphenylborate iodonium salt microwave irradiation
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The Synthesis of Dialdehyde from Sodium Hydrogen Telluride with 1,1',3,3'-Tetramethyl-2,2'-bis-benzimidazolium Salt 被引量:1
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《Chinese Chemical Letters》 SCIE CAS CSCD 2002年第9期836-838,共3页
The reaction of bis-benzimidazolium salts with sodium hydrogen telluride is reported, and a new synthetic method for dialdehydes is provided.
关键词 Bis-benzimidazolium salt sodium hydrogen telluride DIALDEHYDE synthesis.
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Salt/Sodium Intake Estimation in Children and Adolescents of Costa Rica
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作者 Hilda Núñez-Rivas Ileana Holst-Schumacher +3 位作者 Adriana Blanco-Metzler María de los Angeles Montero-Campos Natalia Campos-Saborío Karla Benavides-Aguilar 《Food and Nutrition Sciences》 2020年第10期919-941,共23页
The objectives of this study were to estimate sodium intake and to identify the main dietary sources of this nutrient in young people. Cross-sectional study performed in 2685 students from 64 schools and high-schools ... The objectives of this study were to estimate sodium intake and to identify the main dietary sources of this nutrient in young people. Cross-sectional study performed in 2685 students from 64 schools and high-schools of Costa Rica. A food frequency survey was applied to study the food and beverage intake habits of the participants. The average daily sodium intake for children and adolescents 7 to 18 years of age was 3214 mg. Around 97% of the students had sodium intakes > 2300 mg per day with significant differences by age subgroup, sex and nutritional status due to excess body weight (p < 0.001). The average sodium density of the diet was 1698 mg sodium/1000kcal, and the average addition of salt to the food was 445 mg of sodium (1.1 grams of salt). Including the amount added to the served food, the average sodium intake for children and adolescents from 7 to 18 years of age increased to 3434 mg and the overall average sodium density increased to 1821 mg of sodium/1000kcal, maintaining significant differences by age subgroups (p < 0.001). These results justify carrying out social marketing campaigns that include educational processes with sense and meaning for children, adolescents and families, in such a way that these groups of the population become motivated to modify gradually their eating habits, such as reducing the use of sauces, seasonings and salt in food preparation and at the table. If the habit of adding salt to the served food is gradually reduced or avoided, the children and adolescents in Costa Rica could decrease the intake of salt per day from 1 to 2 grams. This decrease could be even more effective if youngsters additionally would remove the intake of sauces, contributing in this way to achieve the maximum salt intake recommendation (5 g per day). 展开更多
关键词 salt sodium Intake CHILDREN Adolescents Costa Rica
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