bluuebunny/crossref_metadata_2025 huggingface dataset:
Electrochemical degradation of ciprofloxacin with a Sb-doped SnO2 electrode: performance, influencing factors and degradation pathways
Authors: Mu Yanguang , Huang Cong , Li Haipu , Chen Leilei , Zhang Ding , Yang Zhaoguang
Published: September 2019

Sb-doped SnO2 electrodes with different coating times were prepared by an optimum sol–gel method and the application on the electrocatalytic degradation of ciprofloxacin in aqueous solution were investigated.
Development of a robust tool to extract Mulliken and Löwdin charges from plane waves and its application to solid-state materials
Authors: Ertural Christina , Steinberg Simon , Dronskowski Richard
Published: September 2019

A robust tool to extract Mulliken and Löwdin charges for (extended) solids from plane waves has been developed and applied.
Au-based bimetallic catalysts: how the synergy between two metals affects their catalytic activity
Authors: Sha Jin , Paul Sébastien , Dumeignil Franck , Wojcieszak Robert
Published: September 2019

Supported bimetallic nanoparticles are particularly attractive catalysts due to increased activity and stability compared to their monometallic counterparts.
Ultrasensitive recognition of AP sites in DNA at the single-cell level: one molecular rotor sequentially self-regulated to form multiple different stable conformations
Authors: Feng Beidou , Wang Kui , Yang Yonggang , Wang Ge , Zhang Hua , Liu Yufang , Jiang Kai
Published: September 2019

Molecular rotors self-regulate their conformations to emit different ultrasensitive recognition signals for AP sites in DNA at the single-cell level.
Revealing Ni-based layered double hydroxides as high-efficiency electrocatalysts for the oxygen evolution reaction: a DFT study
Authors: Xue Zhe , Zhang Xinyu , Qin Jiaqian , Liu Riping
Published: September 2019

The development of high-activity and earth-abundant non-noble metal electrocatalysts for the oxygen evolution reaction (OER) is highly desirable but is an ongoing challenge facing us now.
Stabilizing a sodium-metal battery with the synergy effects of a sodiophilic matrix and fluorine-rich interface
Authors: Wang Qidi , Zhao Chenglong , Lv Xiaohui , Lu Yaxiang , Lin Kui , Zhang Shaoqiong , Kang Feiyu , Hu Yong-Sheng , Li Baohua
Published: September 2019

Exploring synergy effects of the composite metal anode and electrolyte modification as an effective strategy to fabricate ultra-stable Na-metal batteries.
Efficient dye nanofiltration of a graphene oxide membrane via combination with a covalent organic framework by hot pressing
Authors: Kong Guodong , Pang Jia , Tang Yucheng , Fan Lili , Sun Haixiang , Wang Rongming , Feng Shou , Feng Yang , Fan Weidong , Kang Wenpei , Guo Hailing , Kang Zixi , Sun Daofeng
Published: September 2019

By combining COF-TpPa and GO via hot pressing, the composite membrane exhibited simultaneously improved water permeance and dye rejection rate.
Highly accessible hierarchical porous carbon from a bi-functional ionic liquid bulky gel: high-performance electrochemical double layer capacitors
Authors: Yan Yang , Hao Xiao-Feng , Gao Li-guo , Lin Si-si , Cui Nan , Li Yue-hui , Hao Ce , Ma Ting-li , Wang Hong-xia
Published: September 2019

The graphene-based hierarchical porous carbon GGI has high surface area, dual-doping, micro/meso-pores and exhibits good compatibility with the ionic liquid electrolyte EmimTFSI.
Few-layered Ti3C2Tx MXenes coupled with Fe2O3 nanorod arrays grown on carbon cloth as anodes for flexible asymmetric supercapacitors
Authors: Li Fei , Liu Yi-Lin , Wang Gui-Gen , Zhang Hua-Yu , Zhang Bin , Li Gui-Zhong , Wu Zhi-Peng , Dang Le-Yang , Han Jie-Cai
Published: September 2019

Few-layered Ti3C2Tx MXene wrapped Fe2O3 nanorod arrays grown on carbon cloth, is a promising anode for high-performance flexible asymmetric supercapacitor.
Effect of solid-H2S gas reactions on CZTSSe thin film growth and photovoltaic properties of a 12.62% efficiency device
Authors: Son Dae-Ho , Kim Seung-Hyun , Kim Se-Yun , Kim Young-Ill , Sim Jun-Hyung , Park Si-Nae , Jeon Dong-Hwan , Hwang Dae-Kue , Sung Shi-Joon , Kang Jin-Kyu , Yang Kee-Jeong , Kim Dae-Hwan
Published: September 2019

We fabricated CZTSSe thin films using optimized SLG-Mo/Zn/Cu/Sn (MZCT) as a stacked structure and described the phenomenon of Zn elemental volatilization using the MZCT stacked structure.
Achieving high-performance non-halogenated nonfullerene acceptor-based organic solar cells with 13.7% efficiencyviaa synergistic strategy of an indacenodithieno[3,2-b]selenophene core unit and non-halogenated thiophene-based terminal group
Authors: Liu Kai-Kai , Xu Xiaopeng , Wang Jin-Liang , Zhang Chao , Ge Gao-Yang , Zhuang Fang-Dong , Zhang Han-Jian , Yang Can , Peng Qiang , Pei Jian
Published: September 2019

The combination of indacenodithieno[3,2-b]selenophene core unit and thiophene-containing IC is a successful synergistic strategy with PCE of 13.7%, which is the highest value in NFAs with thiophene-containing IC for binary OSCs.
A high-capacity aqueous Zn-ion hybrid energy storage device using poly(4,4′-thiodiphenol)-modified activated carbon as a cathode material
Authors: Xin Tuo , Wang Yinong , Wang Na , Zhao Yi , Li Huan , Zhang Zongwei , Liu Jinzhang
Published: September 2019

A poly(4,4′-thiodiphenol)/carbon composite cathode is used to fabricate Zn-ion hybrid energy storage devices with a high capacity and wide voltage window.
Influence of bromide content on iodide migration in inverted MAPb(I1−xBrx)3perovskite solar cells
Authors: García-Rodríguez Rodrigo , Ferdani Dominic , Pering Samuel , Baker Peter J. , Cameron Petra J.
Published: September 2019

Impedance spectroscopy shows the bromide concentration required to supress the low frequency response from mobile ions.
Interfacial synergy of ultralong jagged Pt85Mo15–S nanowires with abundant active sites on enhanced hydrogen evolution in an alkaline solution
Authors: Wang Yao , Zhuo Hongying , Zhang Xin , Li Yunrui , Yang Juntao , Liu Yujie , Dai Xiaoping , Li Mingxuan , Zhao Huihui , Cui Meilin , Wang Hai , Li Jun
Published: September 2019

Ultralong jagged PtMo–S nanowires with rich “interfacial active sites” were fabricated by using S as the “active auxiliary” to demonstrate the enhanced catalytic HER performance triggered by the electronic and synergistic effects of PtMo/MoSx.
Physicochemical stimuli as tuning parameters to modulate the structure and stability of nanostructured lipid carriers and release kinetics of encapsulated antileprosy drugs
Authors: Kanwar Rohini , Gradzielski Michael , Prevost Sylvain , Kaur Gurpreet , Appavou Marie-Sousai , Mehta S. K.
Published: September 2019

To unveil the effect of electrolyte concentration, pH and polymer addition on Tween 80 stabilized nanostructured lipid carriers (NLCs, based on dialkyldimethylammonium bromides DxDAB and Na oleate), an in-depth scattering analysis was performed.
A fluorescent molecularly imprinted device for the on-line analysis of AFP in human serum
Authors: Ma Run-tian , Zhao Xiao-bo , Sun Xiao-yu , Liu Jia , Ha Wei , Shi Yan-ping
Published: September 2019

A fluorescent analytical device to on-line detect alpha-fetoprotein in human serum was established for the first time by molecular imprinting technology.
Pro-chondrogenic and immunomodulatory melatonin-loaded electrospun membranes for tendon-to-bone healing
Authors: Song Wei , Ma Zhijie , Wang Chongyang , Li Haiyan , He Yaohua
Published: September 2019

Fabrication of pro-chondrogenic and immunomodulatory melatonin-loaded aligned PCL electrospun membranes by emulsion electrospinning technology for regenerating enthesis and promoting tendon-to-bone healing in a rat rotator cuff tear model.
Discrete color centers in two-dimensional hexagonal boron nitride induced by fast neutron irradiation
Authors: Zhang Hui , Lan Mu , Tang Ge , Chen Feiliang , Shu Zhiwen , Chen Fengxiang , Li Mo
Published: September 2019

Fast neutron irradiation can induce discrete color centers in 2D hBN, without obvious aggregation at multilayer edges or grain boundaries.
Substitution-type luminescent MOF sensor with built-in capturer for selective cholesterol detection in blood serum
Authors: Gong Ming , Yang Jian , Li Yongsheng , Zhuang Qixin , Gu Jinlou
Published: September 2019

A novel substitution-type enzyme-free luminescent MOF sensor is established, which exhibits exceptional capturing and specific detecting abilities towards cholesterol.
Kinetic analysis of the anodic growth of TiO2 nanotubes: effects of voltage and temperature
Authors: Zhang Wanggang , Liu Yiming , Guo Fei , Liu Jiameng , Yang Fuqian
Published: September 2019

Two-step anodization process is used to grow TiO2 nanotube arrays in an organic electrolyte consisting of water, NH4F, and ethylene glycol. The growth of TiO2 nanotubes is dependent on temperature, anodization voltage and growth time.
Interface-engineered reliable HfO2-based RRAM for synaptic simulation
Authors: Wang Qiang , Niu Gang , Roy Sourav , Wang Yankun , Zhang Yijun , Wu Heping , Zhai Shijie , Bai Wei , Shi Peng , Song Sannian , Song Zhitang , Xie Ya-Hong , Ye Zuo-Guang , Wenger Christian , Meng Xiangjian , Ren Wei
Published: September 2019

O3-based interface engineering dominates implementations of analog memory and synaptic simulation using reliable Pt/HfO2/TiN RRAM.
RETRACTED: MicroRNA-367 promotes progression of hepatocellular carcinoma through
PTEN
/PI3K/AKT signaling pathway
Authors: Wang Zhihua , Luo Yu
Published: September 2019

The study aimed to investigate the functional roles of micorRNA (miR)-367 in progression of hepatocellular carcinoma (HCC), as well as its regulation on PI3K/AKT pathway. The relative expression of miR-367 in HCC tissues and cell line was detected using quantitative real-time polymerase chain reaction (qRT-PCR) method. Chi-square test was applied to analyze the relationship between miR-367 expression and clinical characterizes of HCC patients. The influences of miR-367 expression on cell proliferation, migration and invasion were analyzed using MTT and transwell assays respectively. Western blot assay was performed to for protein analysis. HCC tissues and cell lines exhibited significant up-regulation of miR-367. Moreover, the elevated expression of miR-367 was positively correlated with tumor size (P=0.005), metastasis (P=0.004) and TNM stage (P<0.001). Knockdown of miR-367 expression could inhibit cell proliferation, migration and invasion in vitro. While, enhanced miR-367 expression exhibited opposite effects. Besides, inhibition of miR-367 might enhance PTEN expression, reduce the levels of p-GSK3β and p-AKT. PTEN might be a target of miR-367 in HCC. The inhibition of PTEN could reverse the anti-tumor action caused by the knockdown of miR-367. MiR-367 serves as an oncogene in HCC through activating the PI3K/AKT pathway by targeting PTEN.
Disentangling the Arcturus stream
Authors: Kushniruk Iryna , Bensby Thomas
Published: September 2019

Context. The Arcturus stream is an over-density of stars in velocity space and its origin has been much debated recently without any clear conclusion. The (classical) dissolved open cluster origin is essentially refuted; instead the discussions try to distinguish between an accretion, a resonant, or an external-perturbation origin for the stream. As kinematic structures are observational footprints of ongoing and past dynamical processes in disc galaxies, resolving the nature of the Arcturus stream may provide clues to the formation history of the Milky Way and its stellar populations.

Aims. We aim to characterise the kinematical and chemical properties of the Arcturus stream in order to resolve its origin.

Methods. The space velocities, angular momenta, and actions for a sample of more than 5.8 million stars, composed from Gaia DR2 were analysed with a wavelet transform method to characterise kinematic over-densities in the Galactic disc. The kinematic characteristics of each identified group is used to select possible members of the groups from the GALAH and APOGEE spectroscopic surveys to further study and constrain their chemical properties.

Results. In the velocity and angular momentum spaces the already known Sirius, Pleiades, Hyades, Hercules, AF06, Arcturus and KFR08 streams are clearly identified. The Hercules stream appears to be a mixture of thin and thick disc stars. The Arcturus stream, as well as the AF06 and KFR08 streams, are high-velocity and low-angular momentum structures with chemical compositions similar to the thick disc. These three groups extend further from the Galactic plane compared to the Hercules stream. The detections of all the groups were spaced by approximately 20 − 30 km s−1 in azimuthal velocity.

Conclusions. A wide spread of chemical abundances within the Arcturus stream indicates that the group is not a dissolved open cluster. Instead the Arcturus stream, together with the AF06 and KFR08 streams, are more likely to be part of a phase-space wave, that could have been caused by a merger event. This conclusion is based on that the different structures are detected in steps of 20 − 30 km s−1 in azimuthal velocity, that the kinematic and chemical features are different from what is expected for bar-originated structures, and that the higher-velocity streams extend further from the disc than bar-originated structures.
Supercapacitor based PV measurement technique − quality assessment with poly-Si PV modules at IIEST, Kolkata
Authors: Basu Pal Sudipta , Kumar Rahul , Das Bhattacharya Konika , Mukherjee Dipankar , Paul Debkalyan
Published: September 2019

Supercapacitors have been used for the first time as load to PV cell/modules for characterizing their behavior. In this paper, a novel and essentially simple design of a V–I plotter is attempted with a bank of super capacitors (SC) as the load to the PV modules of varying capacities. The distinct advantages of the SC's over the erstwhile capacitors have been comparatively experimented. Finally, an elaborate regression analysis (RA) of principal electrical parameters have yielded consistently high values exceeding 0.993 experimental evaluation of quality parameters like fill-factor (FF) and performance ratio (PR) have yielded a range of 70–79% while PR values frequently ranges from 90% to 99%. Suitability of poly-Si PV modules at the level of PV panel configurations have been ascertained through experimental estimate of series and parallel relative power loss (RPL) values. Typical values below 2% obtained for widely varying climatic level is also a quality indicator for the new metrology in question. Such a prototype I–V plotter is expected to be duly considered for commercial testing applications in PV industries.
Multi-Stage Star Image Identification Method of Three Field-of-View Star Sensor
Authors: Gou Bin , Cheng Yongmei , Zhao Mingyan , Wang Huibin , Liu Chengyuan
Published: September 2019

To improve the low efficiency and low navigation star identification rate of existing star image identification methods for three field-of-view (FOV) star sensor, a multi-stage star image identification method is proposed. Firstly, the generalized regression neural network which has only one adjustable parameter, is used to identify the star images in each field-of-view. Secondly, the star angular distance saved in the navigation star database is used to verify the identification results, and then the optical directions of the three FOVs are calculated by using the correctly identified navigation stars. Thirdly, the optical directions are utilized to auxiliary correct the unidentified and erroneous identified navigation stars. Finally, the high-accuracy probe attitude is estimated by using the correctly identified navigation stars in the three FOVs. The simulation results show that the identification rates of the experimental samples is of 98.9% when the standard deviation of star centroid positioning error increases to 0.07 pixels, but the identification time is only of 8.464 5 ms. Meanwhile, since the three field-of-view star sensor captures the more dispersed navigation stars, the probe attitude accuracy of yaw, pitch and roll angles by using the present method is improved evidently, which is of 1.205 8″, 1.086 7″, and 1.201 8″, respectively.
Aspect Category Detection Based on Attention Mechanism and Bi-Directional LSTM
Authors: Zhou Chenchao , Chen Qun , Li Zhanhuai , Zhao Bo , Xu Yongjun , Qin Yang
Published: September 2019

Online reviews play an increasingly important role in users' purchase decisions. E-commerce websites provide massive user reviews, but it is hard for individuals to make full use of the information. Therefore, it is an urgent task to classify, analyze and summarize the massive comments. In this paper, a model based on attention mechanism and bi-directional long short-term memory (BLSTM) is used to identify the categories of these review objects for the classification of the reviews. The model first uses BLSTM to train the review in the form of word vectors; then according to the part-of-speech, the output vectors of the BLSTM are given corresponding weights. The weights as prior knowledge can guide the learning of attention mechanism to enhance the classification accuracy; finally, the attention mechanism is used to capture category-related important features which are used for category determination. Experiments on the SemEval data set show that our model outperforms the state-of-the-art methods on aspect category detection.
Trajectory Prediction of Target Aircraft Based on HPSO-TPFENN Neural Network
Authors: Wang Xin , Yang Rennong , Zuo Jialiang , Xu Ximeng , Yue Longfei
Published: September 2019

Trajectory prediction plays an important role in modern air combat. Aiming at the large degree of modern simplification, low prediction accuracy, poor authenticity and reliability of data sample in traditional methods, a trajectory prediction method based on HPSO-TPFENN neural network is established by combining with the characteristics of trajectory with time continuity. The time profit factor was introduced into the target function of Elman neural network, and the parameters of improved Elman neural network are optimized by using the hybrid particle swarm optimization algorithm (HPSO), and the HPSO-TPFENN neural network was constructed. An independent prediction method of three-dimensional coordinates is firstly proposed, and the trajectory prediction data sample including course angle and pitch angle is constructed by using true combat data selected in the air combat maneuvering instrument (ACMI), and the trajectory prediction model based on HPSO-TPFENN neural network is established. The precision and real-time performance of trajectory prediction model are analyzed through the simulation experiment, and the results show that the relative error in different direction is below 1%, and it takes about 42ms approximately to complete 595 consecutive prediction, indicating that the present model can accurately and quickly predict the trajectory of the target aircraft.
Effects of HfC Particles on Crack Initiation and Propagation Behavior of WC/Co Composites
Authors: Yan Xinyu , Wang Shouren , Wen Daosheng , Wang Gaoqi , Liu Wentao
Published: September 2019

Tungsten carbide composites were prepared by cold-pressing and hot-pressing sintering; fracture toughness and bending strength of the specimens were tested. The microstructures of HfC/WC/Co composites were observed with the SEM. The mathematical models were established to investigate the relationship between stress intensity factors of crack straight-through, crack deflection, and crack bifurcation with crack length, based on the crack propagation energy release rate. The simulation software ABAQUS was used to verify the four crack propagation methods of crack straight-through, crack deflection, crack bifurcation and crack pinning. The simulation results show that adding appropriate amount of HfC can effectively improve the fracture toughness and bending strength of the composites. The homogeneous distribution of HfC and Co in the matrix has a significant effect on the improvement of the strength and toughness of the composites, and the improvement mechanism is to disperse or transfer the stress at the crack tip to HfC by crack deflection, crack bifurcation, crack pinning, transcrystalline fracture, etc. As a result, the stress concentration at the crack tip in the matrix is reduced, and the toughness of the composites is improved.
Balintgruppen über das Internet – Balint 2.0
Authors: Nease Donald E.
Published: September 2019

Die International Balint Federation hat mit der WONCA Young Doctors Movement Group (Weltorganisation für Hausärzte) zusammengearbeitet, um die Bereitstellung von Online-Balint Group-Sitzungen für junge Hausärzte weltweit zu testen und zu bewerten. Wir fassen hier die Arbeit und die Ergebnisse sowie die laufenden Aktivitäten zusammen, um diese Arbeit voranzutreiben.
Bilateral Dislocation of Mandibular Condyles following General Anesthesia—An Overlooked Problem: A Case Report
Authors: Toufeeq Mohd , Kodali Murali Venkata Rama Mohan , Gunturu Srikanth , Kumar Kiran , Surapaneni Kavya
Published: September 2019

Dislocation of mandibular condyles can occur following excessive mouth opening or traumatic injury to the temporomandibular joint. It can also occur during general anesthesia that at times may go un-noticed in the modern-day theater setup. Here, we describe a case of bilateral dislocation of mandibular condyle following orotracheal intubation for general anesthesia. Right condyle was dislocated into temporal fossa.
Correlation of Bite Force Interpretation in Maximal Intercuspal Position among Patient, Clinician, and T-Scan III System
Authors: Ruttitivapanich Nitikarn , Tansalarak Ratchawan , Palasuk Jadesada , Pumklin Jittima
Published: September 2019

Objective The main purpose of this article was to determine the correlation of bite force in maximal intercuspal position (MIP) among patient’s perceptions, clinician subjective interpretation, and T-Scan III system.

Materials and Methods Forty-three dental students at Naresuan University (Phitsanulok, Thailand) participated in the study. Subjects were positioned by Frankfurt horizontal plane paralleled to the horizontal plane and asked to bilaterally clenched in MIP. Patient’s perception was evaluated by asking which side of the jaw had heavier bite force (right, left, or equally on both sides). Then, the clinician subjective interpretation was assessed using traditional occlusal indicators. Furthermore, patient’s bite force was analyzed using T-Scan III.

Statistical Analysis Cohen’s weighted kappa test was used to evaluate the correlation of bite force.

Results The best correlation between patient’s perception and T-Scan III was at the ± 7.5% cutoff range with 15 subject agreements. While the best correlation between clinician subjective interpretation and T-Scan III was at ± 5.0% cutoff range with 23 subject agreements. Cohen’s weighted kappa indicated slight agreement between T-Scan III and patient’s perception and fair agreement between T-Scan III and clinician.

Conclusions Clinician subjective interpretation is more clinically reliable than patient’s perception when T-Scan III is used as a gold standard.
Stroke Complicating Acute ST Elevation Myocardial Infarction—Current Concepts
Authors: Bhandari Monika , Vishwakarma Pravesh , Sethi Rishi , Pradhan Akshyaya
Published: September 2019

Myocardial infarction (MI) is one of the leading causes of mortality today both in developed and developing countries alike. Advancement in the pharmacotherapy and revascularization techniques has resulted in drastic improvement in survival. Most of the complications of MI can be managed adequately resulting in reduced mortality from MI in the recent years. However, mortality from stroke following acute MI remains high even today. Here, we discuss the incidence, risk factors, and management of stroke following acute ST elevation MI.
Role of Serum Lactate Dehydrogenase in Isolated Head Injury
Authors: Bhardwaj Mohit , Arora Bhavinder
Published: September 2019

In recent years, some encouraging reports have appeared on assessing the degree of brain damage by estimating serum and cerebrospinal fluid enzymes such as lactate dehydrogenase (LDH). In our study, we included 100 patients with isolated head injury arriving at trauma center, PGIMS Rohtak within 24 hours of injury, studied levels of serum LDH on days 1, 3, and 7 of injury, and concluded that levels have diagnostic as well as prognostic significance.
Acute Phase Effect of Memantine Hydrochloride in Experimental Peripheral Nerve Injury
Authors: AK Hakan , Daltaban Iskender Samet , Vural Sevilay
Published: September 2019

Aim In this experimental study, we aimed to investigate possible healing effects of memantine hydrochloride, an N-methyl-d-aspartate (NMDA) antagonist, with clinical, biochemical, and histopathologic methods on acute peripheral nerve injury (PNI).

Material and Method Forty-eight adult Wistar albino rats were divided into four groups (n = 12). The groups were arranged as sham-operated group (group 1), acute compression model group (group 2), trauma + low-dose memantine group (group 3), and trauma + high-dose memantine group (group 4). Memantine was administered intraperitoneally for 7 days. Subjects were sacrificed after the measurement of the sciatic nerve function index (SNFI) on the eighth day. Cyclooxygenase 2 (COX-2) and tumor necrosis factor-α (TNF-α) levels were measured in nerve tissues. Histopathologic evaluation was performed by electron microscopy.

Results The mean sciatic function index (SFI) scores of groups 1 to 4 were +3.27 (standard deviation [SD] ±4.66),–18.2 (SD = ±11.7),–8.5 (SD = ±7.5), and–2.5 (SD = ±9), respectively. The mean COX-2 values were 0.98 ng/mL (SD = ±0.51), 1.89 ng/mL (SD = ±0.22), 1.39 ng/mL (SD = ±0.36), and 1.35 ng/mL (SD = ±0.59), respectively. TNF-α values were 0.09 pg/mL (SD = ±0.23), 1 pg/mL (SD = ±0.96), 0.46 pg/mL (SD = ±0.55), and 0.48 pg/mL (SD = ±0.78), respectively. Group 1 showed normal histologic findings. Group 2 showed marked edema particularly in large-diameter myelins. Myelin configurations were detected in large myelinated axons in group 3. The number of mast cells in endoneurium was high in group 4.

Conclusion The efficacy of memantine in the acute phase of PNI appears to be significant according to the SNFI and biochemical tests. However, histologic findings suggest that high doses of memantine have a negative effect on PNI.
LM Potencies—Sometimes a Must
Authors: Wulfsberg Terje
Published: September 2019

The importance of correct choice of potency, the experiences of Hahnemann and Kent, the two groups where LMs are appropriate, confirmation of this new theory are discussed in this article.
Boron-phosphorous doped graphyne: A near-infrared light absorber
Authors: Bhattacharya Barnali , Deb Jyotirmoy , Sarkar Utpal
Published: September 2019

The first-principle calculation with many-body effects explore the electronic and optical properties of newly designed ‘graphyne with BP at hexagonal ring’ (labeled as BP-yne). Our calculations show that BP-yne surface is a direct band gap semiconductor having band gap greater than pristine graphyne and this band gap value is sufficient to overcome the endothermic character of water-splitting reaction and further indicates its possible photocatalytic activities. The Raman and IR spectra analysis indicates quite different feature compare to its structural analogous ‘graphyne with 3BN at ring’ which may help to identify it during synthesis. Its optical absorption can be tuned from near-infrared to UV region depending on the polarization of electric field vector. The optical band gap, as well as the strong absorption peak, lies in the near-infrared region (NIR) and this promising trait can be exploited in biomedical arena.
On Secure Specifications for Large-Scale Quantum Key Distribution Implementations
Authors: Kanipe Carter , Jeneski Adam
Published: September 2019

This paper addresses several security issues facing large scale or distributed implementations of the BB84 quantum key distribution protocol. Firstly, two simulations address how close the tolerated error and the actual error in the hardware must be. These results are quantified in the graphs below.
Diffusion and Conformational Dynamics of Single DNA Molecules Crowded by Cytoskeletal Proteins
Authors: Regan Kathryn , Dotterweich Rachel , Ricketts Shea , Robertson-Anderson Rae M.
Published: September 2019

The high concentrations of proteins crowding cells greatly influence intracellular DNA dynamics. These crowders, ranging from small mobile proteins to large cytoskeletal filaments such as semiflexible actin and rigid microtubules, can hinder diffusion and induce conformational changes in DNA. While previous studies have mainly focused on the effect of small mobile crowders on DNA transport, we examine the impact of crowding by actin filaments and microtubules. Further, because actin filaments and microtubules are formed by polymerization of actin monomers and tubulin dimers, respectively, we also investigate the role that the polymerization state of each protein plays in DNA transport and in the time-varying conformational changes of single DNA molecules diffusing in in vitro networks of polymerized and monomeric actin and tubulin. We find that crowding by actin monomers slows DNA diffusion while tubulin crowding actually increases diffusion coefficients. Monomeric actin crowding DNA diffusion, more than when actin is polymerized, while crowding by tubulin dimers increases DNA diffusion more than when tubulin is polymerized (microtubules). Further, we find unexpected relationships between DNA coil size and diffusion when crowded. All crowding conditions lead to some degree of DNA compaction, but less compaction enables faster dynamics.
Phase diagrams of liquid-phase mixing in multi-component metal-organic framework glasses constructed by quantitative elemental nano-tomography
Authors: Collins Sean M. , MacArthur Katherine E. , Longley Louis , Tovey Robert , Benning Martin , Schönlieb Carola-Bibiane , Bennett Thomas D. , Midgley Paul A.
Published: September 2019

Several distinct mixing processes and resulting microstructures have recently been reported in multicomponent glasses prepared from multiple metal-organic frameworks. Here, two illustrative examples of multicomponent zeolitic imidazolate framework (ZIF) glasses, the (aTZIF-4-Co)0.5(agZIF-62)0.5 blend and the ag[(ZIF-67)0.2(ZIF-62)0.8] flux melted glass, are studied. These materials are characterized by quantitative X-ray energy dispersive spectroscopy in the scanning transmission electron microscope. By advancing a partial ionization cross section methodology using standards of arbitrary morphology, quantitative nanoscale elemental analysis throughout the glass volume is achieved. In turn, phase diagrams describing the mixing states are presented, offering mechanistic insight into the formation of the observed microstructures. Significant miscibility was observed in ag[(ZIF-67)0.2(ZIF-62)0.8]. These findings establish phase-segregation and interdiffusion as two processes in multicomponent glass formation, which explains the different outcomes observed in blending and flux melting.
Preparation of high-strength magnetically controlled superhydrophilic/oleophobic graphene-based sponges
Authors: Cai An jiang , Yan Xue rui , Liu Jun
Published: September 2019

With the rapid development of modern industry, oil spills and oily industrial wastewater have caused serious environmental problems. Thus, mitigation strategies for this pollution must be developed to alleviate worldwide concerns. A promising mitigation strategy involves the use of high-strength magnetically controlled superhydrophilic/oleophobic sponges prepared using melamine sponge, polyurethane, monolayer graphene, and Fe3O4 as basic materials. Scanning electron microscopy was used to characterize the surface morphology and roughness of this newly developed sponge. Changes in wettability and the mechanisms underlying these changes were investigated by contact angle measurements. The quantity of water absorbed by the prepared sponge in oily wastewater was 80.8 times the mass of the sponge, indicating good adsorption properties and the ability to treat oily wastewater. The experimental investigation of the mechanical properties showed that the elastic coefficient of the sponge was 1000 N/m, five times higher than that of the original sponge. The method developed herein overcomes the shortcomings of traditional oil-water separation materials, including low absorption efficiency and interference from oil, which can block adsorption sites. Therefore, the material developed herein has immense potential in industrial oil purification and oil spill purification.
Reproductive strategy of Scyliorhinus canicula (L., 1758): a holistic approach based on macroscopic measurements and microscopic observations of the reproductive organs
Authors: Kousteni Vasiliki , Megalofonou Persefoni
Published: September 2019

Understanding reproductive features of elasmobranchs that affect population recovery and natural mortality is essential for conservation management planning. Considering macroscopic and microscopic observations of the reproductive tract in 2253 individuals, sampled in Hellenic waters over a 7-year period, four reproductive stages were described. The presence of advanced spermatocyst stages in immature testes supported the early gamete development and long maturation process. The simultaneous presence of follicles of all developmental stages in mature ovaries indicated a protracted egg-laying season. An extended reproductive period was also supported by monthly records of egg-laying females, sexually active males, large egg cases and high values of the gonadosomatic (GSI) and hepatosomatic (HSI) indices. Size at maturity was similar for both sexes. Females and males exhibited no depth segregation compared with individuals of different maturity stages regardless of sex. Sex, size and maturity stage significantly affected GSI, HSI and the relative condition factor. All three somatic indices showed a similar monthly variation, supporting a fat assimilation rate that follows maturation rate, with both affecting physiological condition. The severe population decline that Scyliorhinus canicula has recently undergone should focus our attention on future research supporting robust population modelling to help management of the species.
Variability of upper body kinematics in a highly constrained task – sprint swimming
Authors: Sanders Ross H. , Button Chris , McCabe Carla B.
Published: September 2019

Before examining the effect of changing constraints on skill adaptation, it is useful to know the tolerable variability of a movement pattern for optimal performance. Tolerable variability may vary throughout the period of task performance as some parts of the movement pattern may be more important than others. The purpose of this study was to quantify the inter‐trial variability of performance variables, and hand path as the task‐relevant parameter, of skilled front crawl swimmers during 25 m sprints. It was hypothesised that the wrist paths would have smaller inter‐trial variability during the below water phase than during the above water phase. Twelve skilled swimmers performed four 25 m front crawl sprints which were recorded by six phased locked video cameras for three‐dimensional analysis. Standard deviations and time series repeatability (R 2) of the right and left wrist displacement were determined. On average, swimmers varied their sprint speed between trials by <1.5%. The spatio‐temporal patterns of wrist paths varied by <3 cm in all directions (horizontal, vertical & lateral). There was no significant difference in inter‐trial variability between above and below water phases. Swimmers increased wrist path consistency at the critical events of water entry in the horizontal and lateral directions and at exit for the horizontal direction. This study established levels of variability in spatio‐temporal movement patterns of the paths of the wrist in sprint swimming and provided evidence that swimmers minimise variability for key events, in this case, the position of the wrists at water entry and exit.
Methods for Derivation of Density Matrix of Arbitrary Multi-Mode Gaussian States from Its Phase Space Representation*
Authors: Zhang Sheng-Li , Yang Song
Published: September 2019

We present a method for derivation of the density matrix of an arbitrary multi-mode continuous variable Gaussian entangled state from its phase space representation. An explicit computer algorithm is given to reconstruct the density matrix from Gaussian covariance matrix and quadrature average values. As an example, we apply our method to the derivation of three-mode symmetric continuous variable entangled state. Our method can be used to analyze the entanglement and correlation in continuous variable quantum network with multi-mode quantum entanglement states.
Experimental Realization of Degenerate Fermi Gases of 87Sr Atoms with 10 or Two Spin Components*
Authors: Qi Wei , Liang Ming-Cheng , Zhang Han , Wei Yu-Dong , Wang Wen-Wei , Wang Xu-Jie , Zhang Xibo
Published: September 2019

We report the experimental realization of quantum degenerate Fermi gases of 87Sr atoms under controlled 10- and dual-nuclear-spin configurations. Based on laser cooling and evaporative cooling, we achieve an ultracold Fermi gas of 105 atoms equally distributed over 10 spin states, with a temperature of T/TF=0.21. We further prepare a dual-spin gas by optically pumping atoms to the mF=9/2 and mF=7/2 states and observe a slightly lower T/TF than that for a 10-spin gas under the same trapping condition, showing efficient evaporative cooling under a decreasing number

N

of spin states (

N
≥
2

) despite the increasing importance of Pauli exclusion. Given that rethermalization becomes less efficient with

N

approaching unity, we evaporatively cool an almost polarized gas to 130 nK. The simple and efficient preparation of ultracold Fermi gases of 87Sr with tunable spin configurations provides a first step towards engineering topological quantum systems.
Numerical analysis of the transient heat transfer in high temperature chamber furnaces
Authors: Krumov K S , Penkova N Y
Published: September 2019

An algorithm for numerical analysis of the transient thermal processes in high temperature gas chamber furnaces for ceramic firing is developed. It is based on mathematical models of the conjugate heat transfer, including combustion, turbulent flows of the torch and gas mixtures, heat transfer through radiation, conduction and convection. The algorithm is used for analysis and improvement of the efficiency of a furnace for firing of technical ceramics.
Thermal - fluidics behaviour of water mist and gas fuel flame jets based on experimental results
Authors: Pavel D , Chisacof A , Dimitriu S , Cozma P
Published: September 2019

The main objective of the present paper is to provide a visual investigation of the fire and water mist interference during the extinguish process. This kind of the experimental study for these processes is imposed by the phenomena complexity. The experimental study provides us the information of real behaviour of jets assembly in operation. On this way the physical theoretical model may by better conceived. The main test was focused on the concave shape of ceiling, which gives the better suppression of the flame. From the heat balance, of the studied case, the extinguish efficiency is obtained, the values being around 20%. From these values result that a lot of working agent is lost. That loss is related to the finest of the droplets in the liquid jet. The experimental tests give us the optimal angles between the two jets in aim to realise an efficient extinguish operation.
Design analysis of low pressure distillation column for cryogenic air separation
Authors: Pintilie M , Șerban A , Popa V , Popa C L
Published: September 2019

Cryogenic air separation units are widely used in industry, which consume a large energy and need to produce a huge amount of need of nitrogen, oxygen and argon products with high purity. High purity distillation columns are critical unit operations in cryogenic air separation plants. In this paper the low pressure distillation column is investigated by using a steady state model. The first principles mathematic model of the column is firstly developed, and the pressure, temperature and static liquid nitrogen, oxygen and argon concentrations in the upper column are presented. The obtained results give important information on the variation of temperature, pressure, component concentrations and molar flows within the distillation column. The study highlighted the importance of considering air as ternary mixture. The separation process performance is significantly influenced by the location of side draw of argon and reflux ratio at the top of the column
A review of new technologies in valve systems of internal combustion engines and their effects
Authors: Akal D , Akyol U , Uzuneanu K
Published: September 2019

Efficient use of energy is becoming increasingly crucial due to global warming and depleting fossil fuel sources. Automotive manufacturers aim for fuel economy, reduction of exhaust emissions, durability, volume and weight reduction, and power and torque increase in internal combustion engines. One of the most important developments in this field is the new technologies in classic valve systems. There are still ongoing studies in this field as the gas exchange processes affects all engine parameters. In this review; the principles of new technologies used on classic valve systems and their effects on engines have been investigated. The research has shown; new mechanism technologies used on valve systems have positive effects on engine performance, power, torque and fuel consumption.
About Structural and Thermal Analysis of Diesel Engine Piston Using Ansys Software
Authors: Frătița M , Popescu F , Uzuneanu K , Ion I V , Angheluță C M
Published: September 2019

The main role of the piston is to vary the dimensions of the combustion chamber in internal combustion engine. The piston is in contact with the hot gases resulting from combustion. In addition to thermal stresses, depending on the operating mode of the engine, the piston is required to alternate the inertial force. Therefore, the steel piston undergoes due to high inertial forces, and lightweight aluminium pistons cannot operate at high temperatures. In order to combine the advantages of the two types of materials it has been chosen the constructive design of the bimetal pistons. This paper aims to compare the performances of steel pistons and bimetal pistons using the Ansys software.
Analysis of the terrain specifics and roughness factor on the wind shear over complex terrains
Authors: Terziev A K
Published: September 2019

Wind power production depends mainly on the distribution of wind speed over the terrain. Wind behaviour is a function of terrain features, the roughness of the terrain - the complexity of the relief (the presence of mountain ranges, hills or valleys) and the presence of natural or artificial obstructions along the wind’s path (shrubs, trees, small and large buildings). In order to assess the factors influencing the distribution of the wind shear, long-term measurements with high meteorological masts installed on complex terrain were carried out. The masts are equipped with calibrated equipment to measure wind parameters. A numerical solution has been carried out with specialized software, which also supplied information about the velocity field on the site. A comparison was made between the results of the numerical solution and the experimental ones. An adjustment was proposed to change the initial conditions in order to refine the results of numerical solutions.
Correlations between kinetic and thermodynamic parameters of the extraction of tobacco leaves
Authors: Tasheva S , Gandova V , Popova V , Ivanova T , Damyanova S , Stoyanova A
Published: September 2019

The correlations between thermodynamic and kinetic parameters in the extraction of tobacco leaves (solid – liquid system) were determined. The values of the parameters internal molecular diffusion coefficient, activation energy and entropy were used in the calculation procedure presented in the study, with regard to the extraction process of leaves of three types of tobacco (Virginia, Burley and Oriental), carried out with 50% ethanol as a solvent at different temperatures (20, 30, 40, 50, 60 and 70°C) and duration (10, 20, 30, 40, 50 and 60 min). On the basis of the Arrhenius law the effective diffusion coefficient in solid – liquid system and the reaction rate constant of the three types of tobacco were computed.
Numerical analysis of the influence of the lower hull angle of a round skirtless air cushion vehicle
Authors: Pavăl M S , Popescu A , Zahariea D
Published: September 2019

Ever since 1716, when the first concept of building a vehicle to operate with an air cushion was presented, the world remained fascinated by this concept. This article presents a study on important parameters of the flow into the inner cavity of a simple plenum hull, the first configuration of the air cushion vehicle. In order to achieve this, six constructive models were chosen, the only major difference being the angle of inclination at the bottom of the hull. The paper presents the specific mathematical model adapted for this type of configuration, the imposed constructive dimensions, the steps of numerical analysis and results. An important step of this analysis is the estimation of the total weight of each prototype according to the lower hull angle. The estimate was performed using Catia software and the actual analysis was completed using Matlab.
Trifold PV-T-TEG (photovoltaic-thermal-thermoelectric generators) panel characterization overview
Authors: Lupu A G , Panaite C E , Homutescu V M , Balanescu D T , Popescu A
Published: September 2019

The anticipated depletion of conventional fuels (crude oil, coal) reserves as energy sources triggered extended researches for renewable energy sources. In the last few decades, technologies for energy conversion from solar to electric and thermal energy evolved rapidly. Some recent photovoltaic (PV) panel cooling methods involve thermoelectric (TE) elements. The authors proposed a trifold panel that employs both thermal (T) and TE cooling to lower the temperature of PV panel operation and extract energy from waste heat. Recently, an important number of publications tackled various aspects of PV-TE and PV-T-TE hybrid systems, especially for building integration applications. This paper attempts to cover important topics, with emphasis on aspects related to design and characterization of mobile applications.
Generating structural, interactional and processual order through synergetic entanglement is the essence for understanding and using Quantum Biological Thermodynamics with Finite Speed of the Cardio-Pulmonary System
Authors: Petrescu S , Costea M , Petrescu V , Bolohan R , Borcila B , Feidt M
Published: September 2019

Recently, we invented a new branch of irreversible processes by studying the interaction between Heart and Lungs through thousands of measurements of the heart frequency, lung frequency and oxygen content in the blood for many people of different age. Based on these measurements we discovered a surprisingly simple but powerful formula correlating the two frequencies in any stationary state through a quantum number N, that has an integer value for healthy people, but non integer for ill persons. Actually, the formula states that the interaction between Heart and Lungs, considered as two macroscopic oscillators, is quantized, which means that it is very much ordered or highly organized. We believe that this discovery has no connection with Quantum Mechanics, that describes the behavior of microscopic systems. Thus, the aim of the paper is to explain and understand why the quantization of the Cardio-Pulmonary Interaction occurs in macroscopic biological system. We present two diagrams invented by us for describing the quantized stationary states and processes with or without quantum jump between different stationary states depending on person activity. Based on the above mentioned formula and these diagrams, we show that our discovery is in accordance with the new branch of science, Synergetics.