Bis(μ-3,5-difluorobenzoato)bis[(3,5-di­fluorobenzoato)dimethyltin(IV)]

In the dinuclear title complex, [Sn2(CH3)4(C7H3F2O2)4], the SnIV atom is chelated by two 3,5-difluoro­benzoate (dfb) anions and coordinated by two methyl groups while an O atom from the adjacent dfb anion bridges the Sb atom with a longer Sb—O bond distance of 2.793 (4) Å. The complex mol­ecule has 2 symmetry and the SnIV atom is in a distorted penta­gonal–bipyramidal coordination geometry. In the crystal, mol­ecules are connected by C—H⋯O and C—H⋯F hydrogen bonds

Spot keywords from very noisy and mixed speech

Most existing keyword spotting research focuses on conditions with slight or moderate noise. In this paper, we try to tackle a more challenging task: detecting keywords buried under strong interfering speech (10 times higher than the keyword in amplitude), and even worse, mixed with other keywords. We propose a novel Mix Training (MT) strategy that encourages the model to discover low-energy keywords from noisy and mixed speech. Experiments were conducted with a vanilla CNN and two EfficientNet (B0/B2) architectures. The results evaluated with the Google Speech Command dataset demonstrated that the proposed mix training approach is highly effective and outperforms standard data augmentation and mixup training.Comment: Interspeech 202

Gravitational waves from the vacuum decay with eLISA

We investigate the gravitational wave spectrum resulted from the cosmological first-order phase transition. We compare two models; one is a scalar field model without gravitation, while the other is a scalar field model with gravitation. Based on the sensitivity curves of the eLISA space-based interferometer on the stochastic gravitational-wave background, we compare the difference between the gravitational wave spectra of the former and the latter cases resulted from the bubble collision process. Especially, we calculated the speed of the bubble wall before collision for the two models numerically. We show that the difference between the amplitudes of those spectra can clearly distinguish between the two models. We expect that the eLISA with C4 could observe the spectrum as the fast first-order phase transition or that with C1 as the slow first-order phase transition from the latter case

Thickness dependence of unidirectional spin-Hall magnetoresistance in metallic bilayers

A nonlinear magnetoresistance - called unidirectional spin-Hall magnetoresistance - is recently experimentally discovered in metallic bilayers consisting of a heavy metal and a ferromagnetic metal. To study the fundamental mechanism of the USMR, both ferromagnetic and heavy metallic layer thickness dependence of the USMR are presented in a Pt/Co/AlOx trilayer at room temperature. To avoid ambiguities, second harmonic Hall measurements are used for separating spin-Hall and thermal contributions to the non-linear magnetoresistance. The experimental results are fitted by using a drift-diffusion theory, with parameters extracted from an analysis of longitudinal resistivity of the Co layer within the framework of the Fuchs-Sondheimer model. A good agreement with the theory is found, demonstrating that the USMR is governed by both the spin-Hall effect in the heavy metallic layer and the metallic diffusion process in the ferromagnetic layer

Dichloridoocta­kis(2-chloro­benz­yl)di-μ2-hydroxido-di-μ3-oxido-tetra­tin(IV)

The title tetra­nuclear SnIV compound, [Sn4(C7H6Cl)8Cl2O2(OH)2], has site symmetry . Two O2− and two OH− anions bridge four SnIV cations to form the tetra­nuclear compound. The two independent SnIV cations assume SnO3C2 and SnO2C2Cl distorted trigonal-bipyramidal coordination geometries. Intra­molecular O—H⋯Cl hydrogen bonding is present in the structure. One Cl atom of a chloro­benzyl ligand is disordered over two sites with an occupancy ratio of 0.693 (2):0.307 (2)

catena-Poly[[bis­(μ-3-carboxy­benzoato)bis­(1,10-phenanthroline)tricopper(II)]-di-μ3-isophthalato]

The title copper coordination polymer, [Cu3(C8H4O4)2(C8H5O4)2(C10H8N2)2]n, was synthesized by reacting Cu(NO3)2, isophthalic acid and 1,10-phenanthroline under hydro­thermal conditions. The trinuclear unit presents a central almost planar CuO4 chromophore with the cation on a symmetry center, and two symmetry-related CuN2O3 groups with the metal centre in a distorted square-pyramidal environment. These units are bridged by isophthalate ligands into one-dimensional double-chain coordination polymers which are, in turn, connected by various π–π stacking inter­actions (face-to-face distance ca 3.45 Å) and O—H⋯O hydrogen bonds, forming a three-dimensional supra­molecular network

利培酮合并舒眠胶囊治疗精神分裂症的疗效及对患者糖、脂代谢的影响

Objective: To explore the curative effect and influence on glucose and lipid metabolism of risperidone with Shu Mian capsules in patients with schizophrenia .Methods: 128patients with chronic schizophrenia were randomly divided into the combined group (crisperidone combined with shu mian capsules group) and the single group (risperidone group ), each group was assessed the positive and negative syndrome scale (PANSS),the body mass index (BMI ) was measured and the blood glucose and blood lipid were detected before treatment and after 2,4,8 weekends respectively. After 4,8 weeks ,both the two groups were assessed by Wesconsin card sorting test ( WCST) curative effect and their cognitive function was evaluated .Results: The reacting time in the two groups were of no significantly difference , but compared with condition before treatment, cognitive function of the patients with schizophrenia was improved and their level of total cholesterol was significantly increased (P < 0.05) in the combined group. BMI, blood glucose and blood lipid were significantly increased in single group after 8weeks’ treatment (P < 0.05 or P < 0.01). Conclusion: Shu Mian capsules can lower negative symptoms and improve cognitive function of schizophrenia ,and the dverse reactions is mild. With therapeutic dose range, risperidone in combined group or single group can make equal reacting time, curative effect and affecting blood lipid metabolism in patients with schizophrenia. Single group shows more obvious influence on blood sugat and blood fat metabolismcan.目的  探讨利培酮合并舒眠胶囊治疗慢性精神分裂症的疗效及对患者糖、脂代谢的影响。方法  128例精神分裂症患者采用系统随机分为联合组（利培酮合并舒眠胶囊组）和单用组（利培酮组）。每组各64例分别于治疗前及治疗2、4、8周末采用阳性与阴性症状量表（PANSS）进行评分，并检测体质量指数（BMI）、血糖及血脂；4、8周末评价认知能力及疗效。结果  联合组和单用组起效时间比较差异无统计学意义；联合组能部分改善精神分裂症患者的认知能力，与治疗前相比8周未联合组总胆固醇明显增高（P＜0.05）；单用组BMI、血糖、总胆固醇和甘油三酯明显增高（P＜0.05 或P＜0.01）。结论  舒眠胶囊对精神分裂症阴性症状和认知功能有一定改善作用，不良反应轻微。利培酮治疗精神分裂症的剂量范围内联合组和单用组起效时间相当，但均可影响脂代谢；单用组对血糖、血脂代谢的影响更明显。 

Seismological research in Yunnan Province, China, and its tectonic implication between the Xianshuihe-Xiaojiang fault system and the Red River fault zone

The tectonic crosscutting relationship between the two most tectonic important Xianshuihe-Xiaojiang fault system (XFS) and the Red River fault zone (RRF) is a key basic problem but it is controversial now. These obscure further leads to a hot argument about the geodynamic model of the southeast margin of the Tibetan Plateau. In order to answer whether the XFS has cut across the RRF and extended southwardly, multiple seismological methods, including seismic relocation, b-value analysis, seismic energy, density study, focal mechanism inversion, and regional stress field research, are applied in the Yunnan Province area, China, where the XFS and the RRF intersects with each other. The results comprehensively demonstrate that the southern segment of the XFS has not been affected by the RRF, and it has continued for a length after crossing the RRF, but the Dian Bien Phu fault zone should not be an extension fault of the XFS. Along the SW direction, starting from the middle segment of the XFS, and cutting across the Qujiang fault, Shiping-Jianshui fault zone, RRF, Ailaoshan fault zone, Wuliangshan fault zone, and the southern section of the Daluo fault, the belt should be treated as the eastern boundary of the clockwise rotational in geodynamics model of the Tibetan Plateau in this study area. Based on these conclusion above and previous recognitions, a new geodynamic evolution model is proposed

Dimethano­lbis[N′-(3-pyridylmethyl­ene)benzohydrazide]sodium(I) iodide

The molecule of the title compound, [Na(C13H11N3O)2(CH3OH)2]I, is non-planar, with the Na atom chelated by the O atoms and the N atoms of two N′-(3-pyridylmethyl­ene)benzohydrazide ligands and both O atoms of two methanol ligands. The asymmetric unit consists of one half-mol­ecule. The Na atom is located on a crystallographic centre of inversion. The six-coordinate Na atom adopts a distorted octa­hedral coordination. In the crystal structure, inter­molecular N—H⋯I and O—H⋯N hydrogen bonds link the mol­ecules into a two-dimensional network