{AsW12O40} clusters were grafted onto Ag-MOF to yield two 3D polyoxometallate-based metal organic frameworks (POMOFs), (imi)2[{Ag3(tpb)2}2(H2O){AsW12O40}2]·6H2O (1) and [(Ag7bpy7Cl2){AsWV2WVI10O40}]·H2O (2) (imi = imidazole; tpb 1,2,4,5-tetrakis(4-pyridyl)benzene; bpy 4,4′-bipyridyl). These compounds are complicated networks with intersecting channels novel topologies. They exhibit larger capacitances (929.7 986.1 F g−1 at a current density of 3 A g−1), superior rate capabilities, higher...

Abstract Designing efficient, durable, and cheap bifunctional electrocatalysts is a challenging goal in water splitting. Herein, trivanadium‐substituted Keggin‐type polyoxometalate H 6 PV 3 Mo 9 O 40 (POM) Fe 0.2 Ni 0.8 Co 2 4 (FNCO) are situ grown onto nickel foam (NF) yielding self‐supporting nanoflower‐like heterojunction via convenient hydrothermal reaction. The POM‐Fe /NF as HER OER electrocatalyst, displays low overpotential (89 259 mV) high electrode stability at 10 mA cm −2 ....

Mesoporous ZSM-5 zeolites were directly synthesized by desilication–recrystallization of silicalite-1 with NaAlO2 as Al source and TPAOH template. The fabrication mechanism mesopores was studied based on the different crystal size liquid-to-solid ratio. This revealed that TPA+ played a protective role in controllable desilication while Na+ induced production during recrystallization. When 200 nm treated ratio 10 mL/g, hollow structured nano-ZSM-5 many (∼23 nm) shell produced its external...

Different transition metal (TM) units are introduced into a trivacant Keggin cluster to form three sandwich polytungstate derivatives, (H2en)[{K(H2O)0.5}2{K2(H2O)3}{Ni(H2O)(en)2}2{Ni4(H2O)2(PW9O34)2}] (1), [Cu6(Himi)6{AsIIIW9O33}2]·5H2O (2), and (H2btp)4[FeIII2FeII2(H2O)2(AsW9 O34)2]·4H2O (3) (en = ethanediamine; imi imidazole; btp 1,3-bis(1, 2, 4-triazol-1-yl) propane). Compound 1 is 2,3,8-connected 3D network with {43}2{46·66·83·612·8}{6}2 topology based on bisupported tetra-Ni...

Different metal–organic units were introduced into the {PMo12} polyoxometalate (POM) system to yield three porous coordination polymers with distinct characteristics, {Cu(pra)2}[{Cu(pra)2}3{PMo11VIMoVO40}] (1), [{Ag5(pz)6(H2O)0.5Cl}{PMo11VIMoVO40}] (2), and [{Cu3(bpz)5(H2O)}{PMo12O40}] (3) (pra = pyrazole; pz pyrazine; bpz benzopyrazine), via an in situ hydrothermal method. In comparison maternal Keggin cluster most reported POM electrode materials, compounds 1–3 exhibit larger specific...

{P6Mo18} poly(oxometalate) (POM) clusters have huge steric hindrance and limited active oxygen atoms, which make them difficult to combine with metal-organic units form three-dimensional (3D) porous structures. Therefore, functionalization of such POMs has always been a bottleneck that is break through. In this study, POM was successfully grafted on lock-like chain generate multiporous coordination polymer, [{Na(H2O)(H2btb)}{Cu4I(H2O)(pz)5Cl}{H2Sr⊂P6Mo2VMo16VIO73}]·3H2O (1) (pz = pyrazine;...

Objective: Persistent postural-perceptual dizziness (PPPD) is a common cause of chronic dizziness, but only few studies have reported its clinical characteristics, and no related research has been performed in China. Therefore, the purpose this study was to analyze characteristics PPPD for first time Design: Data collected from all patients during standard practice, further evaluate comparing with control group. Study sample: A total 43 diagnosed were selected as group analysis. Results:...

Two Wells–Dawson arsenotungstate coordination polymers, [{CuII(bim)2}3(As2W18O62)] (1) and [(CuI10pz10Cl4)(As2W18O62)] (bim = 2,2′-biimidazole; pz pyrazine), have been assembled via a hydrothermal method fully characterized. Compound 1 exhibits 2,6-connected two-dimensional hybrid layer based on asymmetrically modified {As2W18} anions {Cu(bim)2} linkers, which is extended to three-dimensional network with special interlayer structure one-dimensional tunnel. 2 host–guest framework that...

The purpose of this study was to explore how the congruence between academic pressure and psychological imbalance affects depressive symptoms in adolescents further grade-level differences these effects among high school students. population consisted 29,975 students from 20 schools Liuyang City, Hunan Province. Mental Health Scale for Secondary School Students (MSSMHS) Self-Depression (SDS) were used assess pressure, symptoms. examined by polynomial regression response surface analysis....

Abstract Polyoxometalates (POMs) are promising electrocatalysts and pseudo‐capacitive materials due to their reversible multi‐electron redox properties. In this study, Dawson‐type mono‐arsenic‐capped arsenomolybdate anchored into channels of {Cu(trz) 2 } 7 metal–organic network yielding a solution‐stable host‐guest structure, [{Cu I (trz) {As III As V Mo 4 VI 14 O 62 }] ·3H ( ), which exhibits higher conductivity specific capacity, excellent rate performance cycle stability than (biz) 9...

Most chemotherapy reactions occur outside of the hospital; therefore, providing transitional care (TC) to patients is essential. However, patients' preferences for TC remain poorly understood. This study aims investigate and willingness pay among breast cancer patients. Data were collected using a discrete choice experiment from large general hospital in North China. The used six attributes describe TC. Conditional logit mixed models applied assess patient preferences, estimate pay, simulate...

To evaluate the effectiveness of 7E teaching model based on real clinical cases in nursing students' rounds. Nursing rounds, as an integral component teaching, are designed to reinforce professional knowledge, foster critical thinking and enhance practical skills. However, traditional teacher-centered approach often results passive learning low efficiency. Therefore, it is crucial explore methods that engage students, promote active cultivate reasoning abilities. Quasi-experimental study....

Rare earth metal-based halide solid electrolytes (HSEs) are considered as one of the most promising electrolyte candidates for novel solid-state batteries. However, reducing content rare metals while...

This single-center, before-and-after study applied the structure-process-outcome (SPO) model to pre-analytical quality control investigate its effect on laboratory testing quality, nursing practices, patient satisfaction, and clinician trust in test results. A design was conducted a provincial Class tertiary hospital. The group (April-September 2022) observation 2023) each included all specimens 550 clinical nurses (from same wards). SPO-guided management pathway involved forming...

Flexible ligands and multinuclear complexes were assembled into nanoscale {P2W18O62} polyoxometalates (POMs) to generate two phosphotungstate hybrid derivatives, (H2bip)2{H2P2 W18O62}·2H2O (1) (bipy)0.5{Ag(bipy)2}{Ag4(bipy)7}{NaP2W18O62}·H2O (2) (bip = 1,5-bis(imidazole-1-yl)pentane; bipy 2,2′-bipy), via a precursor hydrothermal method. Compound 1 is bip ligand modified 4,8-connected supramolecular net with {415;612;8}{45;6}2 topology. In compound 2, the monocore {Ag(bipy)2} tetranuclear...

Basket-like polyoxometalate (POM) nanoclusters possess bulky space barriers and limited coordination active sites; therefore, it is difficult for them to bond with functional metal–organic building units construct porous materials. To overcome this bottleneck, we adopt a dual-ligand strategy anchor basket-like POM onto Ag-pz chain yielding polyporous hybrid material, (H4btb)[{Ag4(H2O)(pz)5Cl}{H2SrP6Mo18O73}]·4H2O (BAS-MOF-1). It the first three-dimensional (3D) net intersecting tunnels based...