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This paper is the fifth study of the subfamily Anabropsinae in China and contributes two new species from Guangxi, China, viz. Anabropsis (Apteranabropsis) multispinula sp. nov. (Chinese name: 多刺黯螽) and Anabropsis (Apteranabropsis) shii sp. nov. (Chinese name: 石氏黯螽). The paraproctal processes and male genitalia of Anabropsis (Apteranabropsis) tonkinensis Rehn, 1906 are illustrated. The entire mitochondrial genomes (mitogenomes) of three species of Anabropsis were sequenced. The complete mitochondrial genomes of A. (Apteranabropsis) multispinula sp. nov., A. (Apteranabropsis) shii sp. nov. and A. (Apteranabropsis) guangxiensis were 16023 bp, 16087 bp and 16148 bp in length, respectively. Entire mitogenome and all protein-coding genes (PCGs) displayed high AT-content values. Besides A. (Pteranabropsis) carnarius and A. (Apteranabropsis) guangxiensis, other species of Anabropsis were not found repeated elements in the A+T-rich region. The phylogenetic relationships were constructed among nine samples of eight species of Anabropsis and two outgroups based on 13 PCGs using both Bayesian Inference (BI) and Maximum Likelihood (ML). The phylogenetic analysis did not support for the monophyly of subgenus Apteranabropsis. It's important to obtain more samples to derive accurate phylogenetic relationships.

Background The proper growth and development of tea plants requires moderately acidic soils and relatively low calcium levels, and excessive calcium at high pH can damage tea plant roots. To reveal the effects of calcium on the responses of tea plant to three pH levels (3.5, 5.0 and 6.5), a repeated test of two factors was designed. Results Root growth and elemental analysis indicated that excessive calcium improved the growth of tea roots at low pH conditions, whereas it did not harm the growth of tea roots under normal and high pH conditions, especially at pH 6.5. Excessive calcium antagonized the absorption and utilization of magnesium by tea plants. Gas chromatography-mass spectrometry results showed that the addition of Ca2+ resulted in the primary metabolism in roots being more active at a low pH level. By contrast, it had obvious adverse effects on the accumulation of root metabolites with high calcium treatment at normal or high pH. Differential metabolites identified using ultra-performance liquid chromatography quadrupole time of flight mass spectrometry indicated that flavonoids demonstrated the largest number of changes, and their biosynthesis was partially enriched with excessive calcium at low and high pH conditions, whereas it was down-regulated under normal pH conditions. Kaempferol 3-(2'-rhamnosyl-6'-acetylgalactoside) 7-rhamnoside, quercetin 3-(6'-sinapoylsophorotrioside) and delphinidin 3-(3'-p-coumaroylglucoside) showed the greatest increase. The results of gene expression related to root growth and calcium regulation were consistent with root growth and root metabolism. Conclusion The overall results demonstrated that high Ca concentrations further aggravate the detrimental effects of high pH to tea roots. However, it is interesting that excessive calcium reduced the harm of a low pH on tea root growth to some extent. © 2021 Society of Chemical Industry.

Two cluster-based metal–organic frameworks {[Cd5L4Br10]·2(CH3)2NH}n (1) and {[MnIII3OL(TA)3]F·sol}n (2) (L = 1,3,5-tris(benzimidazol-1-ylmethyl)-2,4,6-trimethylbenzene, TA = terephthalate anion) containing a semi-rigid tribenzimidazol-based ligand were synthesized and characterized. Single crystal X-ray analyses show that the structure of 1 contains pentanuclear cadmium clusters with an interesting four-fan shape, in which each μ2-Br interlinks two crystallographically unique Cd atoms, while 2 contains a trimanganese cluster with three Mn3+ ions present in an equilateral triangle distribution. Furthermore, 1 exhibits highly selective fluorescent detection of trace Hg2+, with the detection limit of 5.26 × 10−7 M−1. 2 shows antiferromagnetic interactions between Mn3+ ions.

CircFOXO3 plays an important role in the pathogenesis of coronary artery disease (CAD). Single nucleotide polymorphisms (SNPs) at circRNA flanking introns may change its back-splicing and influence circRNA formation. Here, we aimed to investigate the influence of the polymorphisms at the circFOXO3 flanking introns on individual susceptibility to CAD. A total of 1185 individuals were included in the case-control study. In a multivariate logistic regression analysis, we determined that the rs12196996 G variant was significantly associated with increased CAD risk (OR = 1.36, P = 0.014). A similar trend of the association was observed in the recessive model (OR = 2.57, P = 0.003). Stratified analysis revealed a more significant association with CAD risk among younger subjects and non-smokers. Consistent with these results, the haplotype rs12196996G-rs9398171C containing rs12196996G allele was also associated with increased CAD risk (OR = 1.31, P = 0.013). Further investigation revealed that the rs12196996 GG genotype was associated with decreased circFOXO3 expression, but not linear FOXO3 levels. Taken together, our data provide the first evidence that the rs12196996 polymorphism at the circFOXO3 gene flanking intron is associated with CAD risk in the Chinese Han population, which is probably due to influence circFOXO3 levels.

Risk perception is critical to the formation of individual health prevention behaviors. A long-term accurate perception of stroke recurrent risks is imperative for stroke secondary prevention. This study aims to explore the level of recurrence risk perceptions and the influential factors of inaccuracy between perceived and objective risk in first-ever ischemic stroke patients from a rural area.From May to November 2020, 284 first-ever ischemic stroke patients were conveniently recruited in a rural area of Henan Province, China. Perceived risk was measured based on self-reported using a numerical rating scale, whereas the objective risk was measured by the Essen Stroke Risk Score. Patients' perceived risk was compared with their objective risk and categorized as "Accurate," "Underestimated," and "Overestimated." The influencing factors of inaccuracy were further evaluated using multivariate regression analyses.46% of the participants underestimated their stroke risk, while 15.9% overestimated their risks. Patients who were younger (≤65 years), didn't worry about recurrent stroke, and had a low actual recurrent risk were more likely to underestimate their recurrent risk. Patients who were employed, had lower independence, and had greater anxiety were more likely to overestimate their recurrent risk.The majority of participants were unable to accurately perceive their own risk of stroke recurrence. Patients' age, working status, worry about recurrent stroke, actual recurrent risk, level of dependence, and anxiety played a role in perception inaccuracy.The findings could help healthcare providers gain a better understanding of the level and accuracy of recurrence risk perceptions among first-ever stroke patients in the rural area. Future counseling on the perceived risk of stroke recurrence and individual objective risk assessment could be conducted to help patients better understand their risk of recurrence. Individualized risk communication and multidisciplinary teamwork can be developed to improve the accuracy of recurrence risk perceptions and health behaviors.

In recent years, frequent haze episodes have resulted in the deterioration of air quality of the Fenwei Plain during winter and holidays. Besides coal combustion and industrial emissions, the topography and climate of the Fenwei Plain were also the main causes of the haze. The samples were collected in Linfen of Fenwei Plain during the Spring Festival from February 2 to February 13, 2019. The 13 elements(Li, Be, Ti, Rb, Sc, Y, La, Ce, Zr, V, Tl, U, and Sn) in PM

Purpose of the study Genome-wide association studies have revealed an association of ADAMTS7 polymorphisms with the risk of cardiovascular diseases. Nonetheless, the role of ADAMTS7 polymorphisms on myocardial infarction (MI) risk remains poorly understood. Here, we aim to evaluate the effect of ADAMTS7 tag single nucleotide polymorphisms (SNPs) on individual susceptibility to MI. Study design Genotyping of the four tagSNPs (rs1994016, rs3825807, rs4380028 and rs7173743) was performed in 232 MI cases and 661 control subjects using PCR-ligase detection reaction (LDR) method. The association of these four tagSNPs with MI risk was performed with SPSS software. Results Multivariate logistic regression analysis showed that ADAMTS7 tagSNP rs3825807 exhibited a significant effect on MI risk. Compared with the TT homozygotes, the CT genotype (OR1.93, 95% CI1.30to 2.85, Pc=0.004) and the combined CC/CT genotypes (OR1.70, 95% CI1.16 to 2.50, Pc=0.028) were statistically significantly associated with the increased risk for MI. Further stratified analysis revealed a more significant association with MI risk among older subjects, hypertensives, non-diabetics and patients with hyperlipidaemia. Consistently, the haplotype rs1994016T–rs3825807C containing rs3825807 C allele exhibited increased MI risk (OR1.52, 95% CI1.10 to 2.10, p=0.010). However, we did not detect any association of the other three tagSNPs with MI risk. Conclusions Our finding suggest that ADAMTS7 tagSNP rs3825807 contributes to MI susceptibility in the Chinese Han population. Further studies are necessary to confirm the general validity of our findings and to clarify the underlying mechanism for this association.

Four new transition metal fluorosulfates NH4MSO4F (M = Mn, 1; Fe, 2; Co, 3; Ni, 4) were solvothermally synthesized in the solvent of N,N-dimethylacetamide (DMA) with HF as the mineralization agent. The X-ray single crystal diffraction analyses revealed that 1–4 are isomorphous, and possess a three-dimensional framework with the same structural topology as the known nonlinear optical material KTiOPO4 (KTP). The four compounds were constructed from MO4F2 octahedra and SO4 tetrahedra to form two kinds of intersecting 6-membered ring channels along the a and c axes, respectively. Within the channels locate the NH 4 + cations from the decomposition of DMA molecules. All the compounds are thermally stable up to 330 °C. The magnetic studies of 1–4 revealed the antiferromagnetic interaction behaviors in the range of 1.8–300 K.

Three 3D structures coordination polymers: [Ln(C2O4)(CH3COO)(H2O)]n (Ln = Gd, Eu, Tb) featuring a three-dimensional (3D) structure were synthesized with light-weight ligands. 1Gd owing to the higher magnetic density based on the large mass ratio (metal/ligands) and 3D structures, shows good MCE with −ΔSmmax = 39.5 J kg−1 K−1 at 2 K and ΔH = 7 T. Meanwhile, the luminescence properties and luminescence decay of 2Tb and 3Eu were investigated, the results showed that 2Tb and 3Eu present characteristic emissions of EuIII and TbIII ions.

Two metal-organic frameworks [Ce2(L)2(DMF)4] (1), and [Ni3(HL2−)4(bpe)3(H2O)4]·[H2N(CH3)2+]2(DMF)6(H2O)8 (2) (H3L = 4,4′,4″-{[(2,4,6-trimethylbenzene-1,3,5-triyl)tris-(methylene)] tris(oxy)}tribenzoic acid, bpe = trans-4,4′-bipyridylethylene) have been solvothermally synthesized from a flexible tripodal ligand. Single-crystal X-ray diffraction shows that compound 1 features a 3,6-connected double-layer network which is further connected by weak π-π interactions between benzene rings to form a 3D porous network. Compound 2 exhibits an unprecedented (4,5)-connected (33.42.5.62.72)2(6.84.10) topology based on zigzag chains and straight chains. In addition, thermal stabilities and luminescent properties of 1 and 2 were investigated in the solid state.

// Jing-Song Chen 1 , Li-Li Liang 2 , Hong-Xu Xu 3 , Fan Chen 4 , Shun-Li Shen 5 , Wei Chen 5 , Lian-Zhou Chen 4 , Qiao Su 6 , Long-Juan Zhang 4 , Jiong Bi 4 , Wen-Tao Zeng 4 , Wen Li 4 , Ning Ma 7 and Xiao-Hui Huang 4 1 Department of Gastrointestinal Surgery, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, People’s Republic of China 2 Departments of Pediatrics, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China 3 Departments of Laboratory, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China 4 Departments of General Surgical Laboratory, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China 5 Departments of Hepatobiliary Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China 6 Animal Center, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China 7 Department of Gastrointestinal, Hernia and Abdominal Surgery, The Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China Correspondence to: Ning Ma, email: maning85322@163.com Xiao-Hui Huang, email: hxiaohui2006@126.com Keywords: miR-338-3p, epithelial-mesenchymal transition, Snail1, N-cadherin, sonic hedgehog Received: November 25, 2015 Accepted: June 04, 2016 Published: June 17, 2016 ABSTRACT Down-regulation of the miRNA miR-338-3p correlates with the invasive ability of hepatocellular carcinoma (HCC) cells. However, it is currently unclear whether down-regulation of miR-338-3p induces epithelial-mesenchymal transition (EMT), which may be the underlying mechanism governing HCC invasion. Here, we demonstrate that restoration of miR-338-3p expression via transfection of a miR-338-3p mimic reversed EMT and inhibited the motility and invasiveness of HCC cells. Conversely, silencing of endogenous miR-338-3p expression with a miR-338-3p-specific inhibitor induced EMT and enhanced HCC cell motility. Additionally, Snail1 (an upstream regulatory protein of EMT) and Gli1 (a key transcription factor in the sonic hedgehog (SHH) signaling pathway) expression was up-regulated in cells treated with the miR-338-3p inhibitor and down-regulated by the miR-338-3p mimic. Further analyses demonstrated that miR-338-3p inhibitor-induced EMT in HCC cells was blocked by treatment with a small interfering RNA (siRNA) targeting Snail1, that the SHH signaling pathway was required for both miR-338-3p inhibitor-induced EMT and up-regulation of Snail1, and that miR-338-3p targeted a sequence within the 3´-untranslated region of N-cadherin mRNA. Notably, miR-338-3p expression was significantly down-regulated in HCC samples from patients with metastases and was associated with poor metastasis-free survival rates. Lastly, correlations between the expression levels of miR-338-3p and E-cadherin, Smoothened (SMO), Gli1, Snail1, N-cadherin, and vimentin were confirmed in HCC xenograft tumors and HCC patient specimens. Our findings suggest that miR-338-3p suppresses EMT and metastasis via both inhibition of the SHH/Gli1 pathway and direct binding of N-cadherin. miR-338-3p is a potential therapeutic target for metastatic HCC.

Genome-wide association studies have revealed an association ofGenotyping of the four tagSNPs (rs1994016, rs3825807, rs4380028 and rs7173743) was performed in 232 MI cases and 661 control subjects using PCR-ligase detection reaction (LDR) method. The association of these four tagSNPs with MI risk was performed with SPSS software.Multivariate logistic regression analysis showed thatOur finding suggest that

Endothelin-1 (ET-1) plays important roles in endothelial dysfunction, vascular physiology, inflammation, and atherosclerosis. Nonetheless, the role of ET-1 (EDN1) gene variants on coronary artery disease (CAD) risk remains poorly understood. The aim of the present study was to evaluate the role of EDN1 gene polymorphisms on individual susceptibility to CAD. We genotyped five tagSNPs (single-nucleotide polymorphisms) (rs6458155, rs4145451, rs9369217, rs3087459, and rs2070699) within EDN1 gene in 525 CAD patients and 675 control subjects. In a multivariate logistic regression analysis, we detected an association of rs6458155 in EDN1 gene with the CAD risk; compared with the TT homozygotes, the CT heterozygotes (odds ratio (OR) = 1.53, 95% confidence interval (CI) = 1.02–2.29, P=0.040) and the CC homozygotes (OR = 1.55, 95% CI = 1.01–2.36, P=0.043) were statistically significantly associated with the increased risk for CAD. A similar trend of the association was found in dominant model (OR = 1.53, 95% CI = 1.05–2.25, P=0.029). Consistently, the haplotype rs6458155C-rs4145451C containing rs6458155 C allele exhibited the increased CAD risk (OR = 1.22, 95% CI = 1.03–1.43, and P=0.018). In addition, CT genotype of rs6458155 conferred the increased plasma ET-1 levels compared with TT genotype (P

The chiral germanosilicate zeolite ITQ-37 was prepared using a readily-obtained, semi-rigid achiral organic structure-directing agent (SDA) 1,1′,1′′-(2,4,6-trimethylbenzene-1,3,5-triyl)tris(methylene)tris-(3-methyl-1H-imidazol-3-ium) (denoted tmbi). The synthetic factors, including crystallization temperature, water content, germanium and tmbi concentrations for the crystallization of ITQ-37, were studied by means of single crystal X-ray diffraction, powder X-ray diffraction, thermogravimetric analysis, liquid and 13C/19F/29Si solid NMR and photoluminescence spectroscopy. The results showed that high Ge content, high tmbi concentration and low temperature (150 °C) conditions favor the formation of extra-large pore ITQ-37 when supramolecular interactions between tmbi molecules occur. On the other hand, a much diluted tmbi solution and a higher reaction temperature favor the crystallization of an unknown lamellar phase, wherein tmbi is present as monomers. These studies revealed that supramolecular assemblies of tmbi were formed during the zeolite synthesis and acted as SDAs for crystallization of ITQ-37, providing a general and applicable strategy for synthesizing large and extra-large pore zeolites.

Solvothermal reaction of flexible tetrapodal linker tetrakis[4-(carboxyphenyl) oxamethyl]methane acid (H4L) with cobalt salt yields a new metal-organic framework [Co7(L)3(μ3-O)3(DMF)3]∙(DMF)13(H2O)25. X-ray crystallography reveals that the structure exhibits a unique 2-nodal (4,12)-connected topology with the Schlafli symbol of (433.630.83)(46)3, constructed from heptanuclear cobalt clusters as 12-connected nodes and tetrahedral ligands as 4-connected nodes. Temperature-dependent magnetic susceptibility measurements reveal that the heptanuclear cobalt clusters exhibit antiferromagnetic property.

This paper aims to research the floor price of governmental purchasing of foodstuff and the market purchasing price in our country from the year 1990 to 2014. By using HP filter method, consistency analysis, and timing analysis, the paper discusses the relationship between the minimum purchase price and the market price. It turns out that the lowest purchase price and the market price exist periodic and they grow at the same increasing trend; as well, the minimum purchase price is in long-term equilibrium with the market price.

A method of simulation modeling and virtual presentation of river evolution was proposed. The method used a variable scale modeling method to generate virtual environment and the data model of irregular triangle network to build the river channel. The virtual environment and the river channel are unified with seamless splicing algorithm to enhance the sense of immersion. And then digital river simulation platform was developed. It displayed the erosion and deposition of river channel with color mapping and presented an efficient algorithm to analyze the change of section shape. The proposed method is validated by application in analyzing the sediment deposition and erosion of Chongqing reach of Yangtze River.

An important concept called Smart Basin and its theoretical framework are proposed to cope with the complex situation of water resources caused by the global climate change and excessive human activities. The paper analyses the strategic demand and the technical impetus factor making Smart Basin emergence, elaborates its implication and the connotation,designs its overall frame, and introduces the key technologies and the supported platform used by it. And then applications of Smart Basin in the field of flood control, drought resist, pollution prevention and water resources management are studied. As the highest development level of water resources informatization, Smart Basin will generate new growth points of discipline and have a good application prospect in the every field of integrated watershed management.

A high precision structured-based finite volume model for numerical simulation of dam-and dyke-breach flow was proposed. The model regarded the fully two-dimensional shallow water equations as the governing equations, and used the Godunov-type finite volume shock-capturing schemes HLLC to calculate flow flux. Its spatial and temporal accuracy were improved to two order accuracy using the slop limiter and predict-correct method, and the slope source terms and friction source terms were treated with central difference scheme and fully implicit method respectively. And then a robust procedure was adapted in the model to efficiently and accurately simulate the movement of wet and dry boundary and a method of high calculation efficiency was applied in the treatment of complex boundary. A popular example was used to validate the capability of the model. The result shows that the model can capture flow processes over irregular boundary accurately and shows good stability and accuracy.

The paper selects water price as a potentially effective socio-economic factor for the mitigation of conflict between socio-economic development and regional water resources in the Weihe River basin on basis of the driving mechanism research of socio-economic factors for water cycle, and evaluates the variation of socio-economic and hydrological variables by comprehensive simulation of economic system and water resources system by coupling of economic model CGE, water allocation model ROWAS and distributed water cycle model WEP. The results indicate that raising water price would bring down socio-economic development and regional water demand to some extent, but regional water resources tensions just reduce so slightly that corresponding schemes turn out to be not sufficient to deal with water crisis in the Weihe River basin.

In the present work, we describe four previously unreported cucurbituril-based coordination supramolecular self-assemblies, formed in the presence of alkali metal and cadmium ions. Unexpectedly, in the presence of potassium or rubidium and cadmium cations, cucurbituril prefers to coordinate with cadmium to form three dimensional frameworks. The alkali metal ions seem to play a role of structure inducer in HCl medium and are not present in the final structures. In neutral aqueous solution, cadmium cations also show stronger coordination to cucurbituril and form one-dimensional supramolecular chains through static electronic interactions. When the alkali metal ion is sodium in HCl solution, sodium ions show stronger coordination to cucurbituril and form one-dimensional coordination polymers. [CdCl4]2– anions link the linear polymers through static electronic interactions between coordinated chloride anions and sodium cations, which results in the formation of two-dimensional networks.

In the present work, we demonstrate the formation of a typical cucurbit[6]uril (Q[6])-based porous material in the presence of the hexachloroplatinate(IV) anion [PtCl6]2– as an inorganic structure inducer. The driving forces for the structure directing effect of the [PtCl6]2– anion could be attributed to ion–dipole and hydrogen-bonding interactions between the anion and the ≡CH or =CH2 groups on the back of the Q[6] molecule.

The coordination and supramolecular assemblies of Q[8] with lanthanides in the presence of [CdCl4]2− anions show significant differences, which could be used for the isolation of light lanthanides from their heavier counterparts.

In the present work, we describe three cucurbit[7]uril-based coordination supermolecular self-assemblies in the presence of [M(trans)Cl4](2-). It can affect the construction of Q[7]/metal ions-based coordination polymers, at the same time it can result in the formation of Q[7]-based supramolecular assemblies when introducing the [M(trans)Cl4](2-) into the Q[7]/metal ions system.

CXCL16 has been demonstrated to be involved in the development of atherosclerosis and myocardial infarction (MI). Nonetheless, the role of the CXCL16 polymorphisms on MI pathogenesis is far to be elucidated. We herein genotyped four tagSNPs in CXCL16 gene (rs2304973, rs1050998, rs3744700, and rs8123) in 275 MI patients and 670 control subjects, aimed at probing into the impact of CXCL16 polymorphisms on individual susceptibility to MI. Multivariate logistic regression analysis showed that C allele (OR = 1.31, 95% CI = 1.03–1.66, and P=0.029) and CC genotype (OR = 1.84, 95% CI = 1.11–3.06, and P=0.018) of rs1050998 were associated with increased MI risk; and C allele (OR = 0.77, 95% CI = 0.60–0.98, and P=0.036) of rs8123 exhibited decreased MI risk, while the other two tagSNPs had no significant effect. Consistently, the haplotype rs2304973T-rs1050998C-rs3744700G-rs8123A containing the C allele of rs1050998 and A allele of rs8123 exhibited elevated MI risk (OR = 1.41, 95% CI = 1.02–1.96, and P=0.037). Further stratified analysis unveiled a more apparent association with MI risk among younger subjects (≤60 years old). Taken together, our results provided the first evidence that CXCL16 polymorphisms significantly impacted MI risk in Chinese subjects.

Objectives: To investigate the effect of M-ds-P21 on the apoptosis of bladder cancer T24 cells and its potential mechanism. Materials and Methods: Effect of M-ds-P21 on T24 cells were assessed by cell morphology and Western blot. Apoptosis was quantified by Annexin-V flow-cytometry analysis. To uncover the role of P53 in M-ds-P21-mediated apoptosis of T24 cells, we knocked down P53 before treating cells with M-ds-P21, and then assayed P21 and apoptosis-related protein by Western blot. To uncover the mechanism by which M-ds-P21 played stronger effect than ds-P21, we performed confocal microscope analyses. Results: Both M-ds-P21 and ds-P21 treatment changed the cell morphology, leading to cell apoptosis after 3 days. Apoptosis induced by M-ds-P21 and ds-P21 treatment is not P53-dependent but caspase-dependent. Compared with ds-P21, M-ds-P21 significantly increased the bioavailability of ds-RNA in T24 cells. Conclusions: M-ds-P21 treatment induces more apoptotic population than ds-P21 does. The mechanism for stronger effect of M-ds-P21 is partly due to the enhanced bioavailability of ds-RNA in human bladder cancer T24 cells, and not P53-dependent but caspase-dependent.

In the present study, we report three crystal structures of heterometallic Q[5]-based complexes. They are complexes of heterometallic cadmium and potassium ions/Q[5] capsules with a stoichiometry of {(CdCl)[K(H 2 O)][Cl@Q[5]]} + [CdCl 3 (H 2 O) 2 ] − 7H 2 O ( 1 ), heterometallic praseodymium and calcium/Q[5] pairs with a stoichiometry of 2{[Ca(H 2 O)(OH)]- μ -[Pr(H 2 O) 3 [Cl@Q[5]]]} 3+ 6Cl − 32H 2 O ( 2 ) and discrete heterometallic neodymium and potassium ions/Q[5] capsules with a stoichiometry of {[Nd(H 2 O) 3 ][(NO 3 )@Q[5]][K(H 2 O)][Nd(H 2 O) 3 (NO 3 ) 4 ]} 2+ 2(NO 3 ) − 8H 2 O ( 3 ).

In the present study, the coordination and supramolecular self-assemblies of a series of alkali and alkaline earth metal ions to cucurbit[5]uril in the presence of nitrophenol are introduced. The experimental results have proven that the presence of nitrophenol and the ionic radiuses of the metal ions influence greatly the coordination and supramolecular self-assemblies of these metal ions to Q[5] molecule. Compared to in the absence of p-nitrophenol, the presence of p-nitrophenol seems to frustrate the formation of the K-Q[5] coordination polymer, while the presence of p-nitrophenol induces the formation of Rb- and Cs-Q[5] coordination polymers. Basically, one-dimensional supramolecular chains are constructed of alkaline earth metal ions and Q[5] molecules alternating; the sizes of their ionic radiuses influence the interaction modes in the chain. The formation of the Ca-Q[5] polymer results in the partial coordination of Ca cations to the portals of adjacent Q[5] molecules due to the smaller ionic radiu...

The proportion of LED in the lighting area gradually increased. But its high price, the low luminous efficiency, reliability problems restricted its global application. Therefore, for reliability problems, design a thermal structure of 19.2W multi-chip on board aluminum plate LED. Enhance the reliability mainly by settle a piece of silicon between the aluminum plate and the chips. Analyze by finite element method and use the ANSYS simulation software, the simulation for the thermal field is performed. Identify the optimal combination of structural parameters by using the orthogonal experimental method. The maximum steady-state temperature is less than 53.69 °C. Analyze the thermal-structure coupling simulation of the optimization of the thermal structure and reach the maximum thermal stress of 144MPa. So we can say that heat stress in terms of the design is safe and reliable. Eventually arrive at a more ideal LED aluminum plate thermal structure.

An improved two – phase contact oxidation adsorption integrated bioreactor (CABR) was used to treat mixed wastewater from copper mine. The CABR was made up of a biofilm reactor and an activated carbon reactor. Polyacrylonitrile balls (20 mm diameter, 260 m2/m3 specific surface, 90% porosity) were filled into the contact oxidation reactor as biofilm attaching materials. Hydraulic residence times (HRT) of the two contact oxidation reactor were 1.5 hr and 1.2 hr, separately. Relevant ratio of aeration and water of the two contact oxidation were 5:1 and 3:1. From the long-term operation, the average removal efficiencies of chemical oxygen demand (COD) and ammonia nitrogen (NH4+-N) were 84.1% and 71.3% respectively. Two – phase contact oxidation can achieve the higher removal efficiency and the lower power consumption. Additionally, the activated carbon reactor can significantly remove heavy metal.

The effects of various extractants removing Cr from the soil of chromite ore processing residue (COPR) deposited sites were studied in order to select the optimal extractant agent. The effects of this agent on the removal of Cr(VI) and Cr(III) in the contaminated soil were also investigated. The results showed that organic complexing agents had higher removal efficiency than that of inorganic complexing agents due to the high content of Cr(III) in the soil(90.3%). The Cr removal of citric/sodium citrate (mole ratio: 1:1) was 35.95% in 24h. The reason why citric/sodium citrate removed more Cr than other agents is that citric can solubilize the mineral matrix, compete for the surfaces sites to desorb Cr(VI) and remove Cr(III) by its complexation. The concentration radio of Cr(VI) and Cr(III) in the initial soil was 0.11. Thus improving the removal of Cr(III)is the key point of improving the total Cr removal.