bluuebunny/crossref_metadata_2025 huggingface dataset:
Rational design of an orthogonal noncovalent interaction system at the MUPP1 PDZ11 complex interface with CaMKIIα-derived peptides in human fertilization
Authors: Zhang Yi-Le , Han Zhao-Feng
Published: July 2017

An orthogonal noncovalent interaction (ONI) system between a native hydrogen bond and a designed halogen bond across the complex interface of the MUPP1 PDZ11 domain with the CaMKIIαsia[Asn-1Phe] peptide mutant is introduced using a structure-based rational approach.
Star-shaped π-gelators based on oxadiazole and thiadiazoles: a structure–property correlation
Authors: Nath Subrata , Pathak Suraj Kumar , De Joydip , Pal Santanu Kumar , Achalkumar Ammathnadu S.
Published: July 2017

Structural requirement of luminescent stars and tetracatenars to stabilize liquid crystals and organogels.
Highly sensitive and selective fluorescent sensor for copper(ii) based on salicylaldehyde Schiff-base derivatives with aggregation induced emission and mechanoluminescence
Authors: Yang Xiaoli , Zhang Wenyan , Yi Zihan , Xu Hao , Wei Jun , Hao Lingyun
Published: July 2017

The present study provides valuable information for designing materials with AIE, Cu2+ sensor and MFC properties based on Schiff-bases.
Particle size, morphology and phase transitions in hydrothermally produced VO2(D)
Authors: Teixeira Diana , Quesada-Cabrera Raul , Powell Michael J. , Goh G. K. L. , Sankar G. , Parkin I. P. , Palgrave R. G.
Published: July 2017

An easy and reproducible method to synthesise thermochromic VO2[M] via VO2[D] at a low calcination temperature.
A graphyne-like porous carbon-rich network synthesized via alkyne metathesis
Authors: Wu Bin , Li Manrong , Xiao Shuning , Qu Yangkun , Qiu Xiaoyan , Liu Taifeng , Tian Fenghui , Li Hexing , Xiao Shengxiong
Published: July 2017

Alkyne metathesis was applied to yield a sp2/sp hybridized graphyne-like porous carbon-rich network material with tilted 3D channels and showed selective absorption of CO2 over N2.
Correction: Facile synthesis of stable, water soluble, dendron-coated gold nanoparticles
Authors: Enciso Alan E. , Doni Giovanni , Nifosì Riccardo , Palazzesi Ferruccio , Gonzalez Roberto , Ellsworth Ashley A. , Coffer Jeffery L. , Walker Amy V. , Pavan Giovanni M. , Mohamed Ahmed A. , Simanek Eric E.
Published: July 2017

Correction for ‘Facile synthesis of stable, water soluble, dendron-coated gold nanoparticles’ by Alan E. Enciso, et al., Nanoscale, 2017, 9, 3128–3132.
Novel imprinted polyethyleneimine nano-fluorescent probes with controllable selectivity for recognizing and adsorbing metal ions
Authors: Jia Jin , Cheng Gui-Juan , Wu Aihua , Luan Shengji
Published: July 2017

Novel ion imprinted nano-fluorescent probes based on polyethyleneimine (PEI) were obtained via simple imprinting and grafting with fluorescein, and used for high recognition, detection and adsorption of Cu2+, Zn2+ and Cr3+ in aqueous solution.
Preparation and characterization of microporous carbon spheres from high amylose pea maltodextrin
Authors: Anceschi Anastasia , Magnacca Giuliana , Trotta Francesco , Zanetti Marco
Published: July 2017

Porous carbon materials have attracted great interest for their many industrial applications.
Self-assembled nanoparticles based on a carboxymethylcellulose–ursolic acid conjugate for anticancer combination therapy
Authors: Liu Yan-xue , Liu Ke-feng , Li Chun-xiao , Wang Lu-ying , Liu Jing , He Jing , Lei Jiandu , Liu Xingyong
Published: July 2017

A new self-assembled nanoparticle platform based on a carboxymethylcellulose (CMC)–ursolic acid (UA) conjugate is presented for the first time.
γ-Cyclodextrin metal–organic framework for efficient separation of chiral aromatic alcohols
Authors: Yang Cheng-Xiong , Zheng Yu-Zhen , Yan Xiu-Ping
Published: July 2017

A γ-cyclodextrin metal–organic framework was applied as an efficient chiral stationary phase for HPLC separation of chiral aromatic alcohols.
The in vivo anti-tumor effect of curcumin derivative (2E,6E)-2,6-bis(4-hydroxy-3-methoxybenzylidene)cyclohexanone (BHMC) on 4T1 breast cancer cells
Authors: Razak Nursyamirah Abd , Akhtar M. Nadeem , Abu Nadiah , Ho Wan Yong , Tan Sheau Wei , Zareen Seema , Taj-ud-din Saiful Nizam bin , Long Kamariah , Alitheen Noorjahan Banu , Yeap Swee Keong
Published: July 2017

BHMC possessedin vitroandin vivoantitumor effect on 4T1 triple negative breast cancer cells.
Quercetin as a simple but versatile primer in dentin bonding
Authors: Li Kang , Yang Hongye , Yan Huiyi , Sun Yuhong , Chen Xiaohui , Guo Jingmei , Yue Jiaxi , Huang Cui
Published: July 2017

A quercetin/ethanol solution may serve as a simple but versatile primer to obtain desirable bonding stability and prevent secondary caries.
Future high-energy density anode materials from an automotive application perspective
Authors: Andre Dave , Hain Holger , Lamp Peter , Maglia Filippo , Stiaszny Barbara
Published: July 2017

Several future anode active materials are critically evaluated against the energy, power and lifetime targets for high-energy density automotive applications.
Aminoacetonitrile as precursor for nitrogen rich stable and insensitive asymmetric N-methylene-C linked tetrazole-based energetic compounds
Authors: Kumar Dheeraj , Imler Gregory H. , Parrish Damon A. , Shreeve Jean'ne M.
Published: July 2017

This work demonstrates the synthesis and characterization of nitrogen rich stable and insensitive N-methylene-C Linked tetrazole-based energetic compounds.
Manipulation of cell adhesion and dynamics using RGD functionalized polymers
Authors: Li Juyi , Yu Yingjie , Myungwoong Kim , Li Kao , Mikhail John , Zhang Linxi , Chang Chung-Chueh , Gersappe Dilip , Simon Marcia , Ober Christopher , Rafailovich Miriam
Published: July 2017

An ABA tri-block co-polymer with RGD peptide sequences inserted were synthesized. Cell adhesion can be controlled by polymer configuration changingviaelectrical field.
Superior performance of macroporous over gel type polystyrene as a support for the development of photo-bactericidal materials
Authors: Felip-León Carles , Arnau del Valle Carla , Pérez-Laguna Vanesa , Isabel Millán-Lou María , Miravet Juan F. , Mikhailov Maxim , Sokolov Maxim N. , Rezusta-López Antonio , Galindo Francisco
Published: July 2017

Macroporous polystyrene resins are best suited than gel-type polymers to develop supported photosensitizers for the generation of bactericidal singlet oxygen.
Concentration-tailored self-assembly composition and function of the coordinating self-assembly of perylenetetracarboxylate
Authors: Gao Xuedong , Wang Yijie , Wang Xiaolong , Guo Xuefeng , Huang Jianbin , Yan Yun
Published: July 2017

Concentration can tailor the coordinating stoichiometry between perylenetetracarboxylate (PTC) and Ni2+ and the material function of the coordinating self-assembly of PTC–Ni.
Postarthroscopy Imaging in Femoroacetabular Impingement: Persistent Pain May Be Due to an Insufficient Correction of Preoperative Abnormalities
Authors: Tudisco Cosimo , Bisicchia Salvatore , Tormenta Sandro , Taglieri Amedeo , Fanucci Ezio
Published: July 2017

Purpose The purpose of this study was to evaluate the effect of correction of abnormal radiographic parameters on postoperative pain in a group of patients treated arthroscopically for femoracetabular impingement (FAI).

Methods A retrospective study was performed on 23 patients affected by mixed-type FAI and treated arthroscopically. There were 11 males and 12 females with a mean age of 46.5 (range: 28–67) years. Center-edge (CE) and α angles were measured on preoperative and postoperative radiographic and magnetic resonance imaging (MRI) studies and were correlated with persistent pain at follow-up.

Results The mean preoperative CE and α angles were 38.6 ± 5.2 and 67.3 ± 7.2 degrees, respectively. At follow-up, in the 17 pain-free patients, the mean pre- and postoperative CE angle were 38.1 ± 5.6 and 32.6 ± 4.8 degrees, respectively, whereas the mean pre- and postoperative α angles at MRI were 66.3 ± 7.9 and 47.9 ± 8.9 degrees, respectively. In six patients with persistent hip pain, the mean pre- and postoperative CE angles were 39.8 ± 3.6 and 35.8 ± 3.1 degrees, respectively, whereas the mean pre- and postoperative α angles were 70.0 ± 3.9 and 58.8 ± 2.6 degrees, respectively. Mean values of all the analyzed radiological parameters, except CE angle in patients with pain, improved significantly after surgery. On comparing patient groups, significantly lower postoperative α angles and lower CE angle were observed in patients without pain.

Conclusion In case of persistent pain after arthroscopic treatment of FAI, a new set of imaging studies must be performed because pain may be related to an insufficient correction of preoperative radiographic abnormalities.

Level of Evidence Level IV, retrospective case series.
Primary Spinal Intradural Mesenchymal Chondrosarcoma with Several Local Regrowths Treated with Osteoplastic Laminotomies: A Case Report
Authors: Derenda Marek , Borof Damian , Kowalina Ireneusz , Wesołowski Wojciech , Kloc Wojciech , Iżycka-Świeszewska Ewa
Published: July 2017

Mesenchymal chondrosarcomas (MCSs) are rare malignant tumors of the bone and soft tissues. Only a few cases of such tumors originating from the spinal canal meninges have been described in the literature. The authors report on a case of a 22-year-old woman with MCS of the arachnoid at the T12-L1 level with a 14-year-long observation. The tumor was totally resected using osteoplastic laminotomy with reconstruction of laminar roof. This small spindle cell tumor was initially microscopically suspected of synovial sarcoma, but correctly verified with widened immunophenotyping and molecular studies as MCS. At its first recurrence, the neoplasm showed microscopically a typical bimorphic pattern of small round cell component with foci of hyaline cartilage. The patient experienced three local recurrences: 4, 6, and 10 years after the initial resection, respectively. The techniques of laminotomy and relaminotomy were also used during three following operations. The repeated surgical removal, radiotherapy, and chemotherapy were the methods of complex oncological treatment. The patient remains now in complete remission, fully self-dependent with slight motor disturbance, and mild sensory deficits. Current views on the clinicopathological characteristics and treatment modalities of the chondrosarcomas of the spinal canal are discussed.
Rückblick auf Erfolgsjahr
Authors: Peters Oliver
Published: July 2017

Die Bundesdelegiertenversammlung des VPT war ein voller Erfolg. Rund 80 Delegierte und Vorstandsmitglieder des Verbandes Physikalische
Therapie e.V. trafen sich am 16. und 17. Juni in Bremen zu einem konstruktiven Austausch.
Cecum intubation rate as quality indicator in clinical versus screening colonoscopy
Authors: Hoff Geir , Holme Øyvind , Bretthauer Michael , Sandvei Per , Darre-Næss Ole , Stallemo Asbjørn , Wiig Håvard , Høie Ole , Noraberg Geir , Moritz Volker , de Lange Thomas
Published: July 2017

Background and study aims Some guidelines recommend a minimum standard of 90 % cecal intubation rate (CIR) in routine clinics and 95 % in screening colonoscopy, while others have not made this distinction – both with limited evidence to support either view. This study questions the rationale for making such differentiation.

Patients and methods We assessed cecum intubation rates amongst colonoscopies recorded in the Norwegian national quality register Gastronet by 35 endoscopists performing both clinical and screening colonoscopies. Colonoscopies were categorized into primary screening colonoscopy, work-up colonoscopy of screen-positives and clinical colonoscopy or surveillance. Cases with insufficient bowel preparation or mechanical obstruction were excluded. Endoscopists were categorized into “junior” and “senior” endoscopists depending on training and experience. Univariable and multivariable logistic regression analyses were applied.

Results During a 2-year period, 10,267 colonoscopies were included (primary screening colonoscopy: 746; work-up colonoscopy of screen-positives: 2,604; clinical colonoscopy or surveillance: 6917). The crude CIR in clinical routine colonoscopy, primary screening colonoscopy and work-up colonoscopy was 97.1 %, 97.1 % and 98.6 %, respectively. In a multiple logistic regression analysis, there were no differences in CIR between the 3 groups. Poor bowel cleansing and female sex were independent predictors for intubation failure.

Conclusion Cecal intubation rate in clinical colonoscopies and colonoscopy screening are similar. There is no reason to differentiate between screening and clinical colonoscopy with regard to CIR.
Retrospective analysis of large bowel obstruction or perforation caused by oral preparation for colonoscopy
Authors: Yamauchi Akihiro , Kudo Shin-ei , Mori Yuichi , Miyachi Hideyuki , Misawa Masashi , Kamo Hatsumi , Hisayuki Tomokazu , Kudo Toyoki , Hayashi Takemasa , Wakamura Kunihiko , Katagiri Atsushi , Baba Toshiyuki , Hidaka Eiji , Ishida Fumio
Published: July 2017

Background and study aims Patients undergoing bowel preparation for colonoscopy are at risk of potentially severe adverse events such as large-bowel obstruction (LBO) and perforation. These patients usually need emergency surgery and the consequences may be fatal. Little is known about the risk factors for LBO and perforation in these circumstances. We sought to establish the natural history of LBO and perforation caused by oral preparation for colonoscopy.

Patients and methods We retrospectively analyzed data from 20 patients with LBO or perforation associated with oral preparation for colonoscopy. All patients were treated at the Showa University Northern Yokohama Hospital (SUNYH) between April 2001 and December 2015. Drugs used for bowel preparation, age, sex, indication for colonoscopy, pathogenesis and treatment were recorded.

Results Eighteen of the patients had LBO and 2 had perforation. Fourteen events occurred at SUNYH, which accounted for 0.016 % of patients who underwent bowel preparation during this period. Seventeen patients were symptomatic when the decision to undertake colonoscopy was made (including 7 who complained of constipation and 4 who complained of abdominal pain; 3e were asymptomatic). Nineteen patients ultimately required surgery, 13 within 3 days of presentation. Eleven patients ultimately required colostomy. There was no perioperative mortality in our cases.

Conclusion Large bowel obstruction and perforation are rare events associated with oral preparation for colonoscopy, but frequently require surgery. Exacerbation of constipation might be a risk factor for LBO or perforation. Potentially catastrophic situations can be avoided by early detection and treatment.
Recurrence of intestinal metaplasia and early neoplasia after endoscopic eradication therapy for Barrett’s esophagus: a systematic review and meta-analysis
Authors: Fujii-Lau Larissa , Cinnor Birtukan , Shaheen Nicholas , Gaddam Srinivas , Komanduri Srinadh , Muthusamy V. , Das Ananya , Wilson Robert , Simon Violette , Kushnir Vladimir , Mullady Daniel , Edmundowicz Steven , Early Dayna , Wani Sachin
Published: July 2017

Background Conflicting data exist with regard to recurrence rates of intestinal metaplasia (IM) and dysplasia after achieving complete eradication of intestinal metaplasia (CE-IM) in Barrett’s esophagus (BE) patients.

Aim (i) To determine the incidence of recurrent IM and dysplasia achieving CE-IM and (ii) to compare recurrence rates between treatment modalities [radiofrequency ablation (RFA) with or without endoscopic mucosal resection (EMR) vs stepwise complete EMR (SRER)].

Methods A systematic search was performed for studies reporting on outcomes and estimates of recurrence rates after achieving CE-IM. Pooled incidence [per 100-patient-years (PY)] and risk ratios with 95 %CI were obtained. Heterogeneity was measured using the I
2 statistic. Subgroup analyses, decided a priori, were performed to explore heterogeneity in results.

Results A total of 39 studies were identified (25-RFA, 13-SRER, and 2 combined). The pooled incidence of any recurrence was 7.5 (95 %CI 6.1 – 9.0)/100 PY with a pooled incidence of IM recurrence rate of 4.8 (95 %CI 3.8 – 5.9)/100 PY, and dysplasia recurrence rate of 2.0 (95 %CI 1.5 – 2.5)/100 PY. Compared to the SRER group, the RFA group had significantly higher overall [8.6 (6.7 – 10.5)/100 PY vs. 5.1 (3.1 – 7)/100 PY, P = 0.01] and IM recurrence rates [5.8 (4.3 – 7.3)/100 PY vs. 3.1 (1.7 – 4)/100 PY, P < 0.01] with no difference in recurrence rates of dysplasia. Significant heterogeneity between studies was identified. The majority of recurrences were amenable to repeat endoscopic eradication therapy (EET).

Conclusion The results of this study demonstrate that the incidence rates of overall, IM, and dysplasia recurrence rates post-EET are not inconsiderable and reinforce the importance of close surveillance after achieving CE-IM.
Hüftarthroskopie – Anspruchsvoller Eingriff
Authors: Specht Jürgen
Published: July 2017

Für eine Endoprothese ist es noch zu früh, dennoch macht das Hüftgelenk mächtig Probleme? In diesem Fall kann eine arthroskopische Behandlung helfen. Dr. Jürgen Specht erläutert das OP-Verfahren und gibt im Innenteil der Grafik Einblicke, welche Pathologien sich gut minimalinvasiv behandeln lassen und wie die optimale postoperative Physiotherapie aussieht.
Editorial
Authors: Weiland Frank
Published: July 2017

Es gibt Kolleginnen und Kollegen die uns ein Arbeitsleben lang mit so vielen neuen Erkenntnissen konfrontieren, dass es schwerfällt mit dem Lesen schritt zu halten. Eine dieser Personen ist Frau Professor Anne Marie Kuijpers-Jagtman, Professor emeritus am Radboud Medical Center Nijmegen, eine begnadete Wissenschaftlerin, Autorin, Lehrerin, Vortragende, und das seit mehr als 40 Jahren. „Emeritiert“ heißt bei ihr nicht, dass sie sich zur Ruhe gesetzt hat.
Ein In-vitro-Mausmodell für die Palatogenese und die Entstehung von Gaumenspalten
Authors: Von den Hoff Johannes , Fuentes Laury , Bloemen Marjon , Kuijpers-Jagtman Anne
Published: July 2017

The mouse is an excellent model to study palatogenesis since, like humans, it is a mammal, it can easily be bred and a wide array of molecular tools are available. Moreover, the isolated embryonic mouse palate can be cultured in vitro, which allows us to study the actual fusion process in detail.

Just prior to the actual fusion at E13, the maxilla with the 2 palatal shelves can be dissected from the embryo head. The maxilla is cultured on a filter paper on top of a stainless-steel grid at the interface of the culture medium and air. After 24 h in culture, the palatal shelves are in contact and the MES is clearly visible. At 48 h, the MES has nearly completely disintegrated with small remnants at the nasal and oral side of the palate. Finally, at 72 h, the palatal shelves are completely fused and osteoid tissue is beginning to form in the lateral areas.

The exact downstream molecular mechanisms that lead to clefting are far from being unraveled. The model for palate fusion presented here offers the possibility to analyze the molecular and cellular mechanisms that lead to clefting as a result of specific genetic and environmental factors. This will pave the way to pharmacological intervention for the prevention of cleft lip and/or palate in susceptible individuals.
Fasten und Lebererkrankungen
Authors: Lischka Eva
Published: July 2017

Für chronische Hepatopathien stellt die kombinierte Fastentherapie eine kausale, kostengünstige und effektive Behandlungsmöglichkeit dar –
sofern die Leber ihre Funktion nicht durch Zirrhose vollständig eingebüßt hat. Besonders die durch Überernährung und Bewegungsmangel
verursachte Fettleber und Fettleberhepatitis lässt sich durch Fasten sehr gut therapieren. In dieser Zeit fällt es den Patienten leichter
auf toxische Einflüsse wie Alkohol zu verzichten Dadurch kann der Lebensstil Studien zufolge nachhaltiger beeinflusst werden als durch eine
Diät. Auch bei Virushepatitis wurden günstige Effekte beobachtet.
Fehlgeschlagene Einordnung eines impaktierten Zahnes aufgrund sekundärer Ankylose im Bereich einer zervikalen Resorptionsläsion: ein Fallbericht
Authors: Cox N. , Feberwee E. , Bruggink R. , Becker A. , Maltha J. , Kuijpers-Jagtman A. , Wagener F.
Published: July 2017

Die invasive zervikale Wurzelresorption (invasive cervical root resorption, ICRR) ist eine Erkrankung, die in der Praxis häufig nicht bekannt ist. Ziel des vorliegenden Fallberichtes ist es, Kieferorthopäden und Kieferchirurgen bei der Diagnostik und dem praktischen Umgang mit dieser Form der externen Wurzelresorption zu unterstützen. Außerdem möchten wir mit unserem Beitrag einen pathologischen Mechanismus unterstützen, mit dem sich die Störung der kieferorthopädischen Zahnbewegung besser erklären lässt. Wir stellen eine Patientin mit einem nicht reagierenden impaktierten oberen Eckzahn vor, bei der ICRR diagnostiziert wurde. Die volumentomografische und histochemische Untersuchung des befallenen Eckzahnes zeigte einen aggressiven dynamischen Prozess mit gleichzeitigen Resorptionen und Knochenanlagerungen. In einem fortgeschrittenen Stadium kann eine ICRR durch Neubildung von Osteoidgewebe zu einer sekundären Ankylose führen. In Verbindung mit ausgeübten kieferorthopädischen Kräften kann es zu negativen Folgen, wie etwa Resorptionen an den Wurzeln der Nachbarzähne und zur Störung der Entwicklung des Alveolarfortsatzes, kommen. Aufgrund des aggressiven Charakters und der erst spät einsetzenden Symptomatik ist eine frühe Diagnostik mithilfe der digitalen Volumentomografie wichtig, da auf diese Weise Behandlungsoptionen mit optimistischer Prognose zur Verfügung stehen.
(+)-Usnic Acid Isolated from the Lichen Cladonia substellata Impairs Myocardial Contractility
Authors: Mendonça Sílvia , de Vasconcelos Carla , Cruz Jader , Roman-Campos Danilo , Menezes-Filho José , Anjos-Neto Robson , Martins Diogo , de Souza Araújo Adriano , da Silva Luiz , dos Santos Bezerra Marília , Albuquerque-Júnior Ricardo , Conde-Garcia Eduardo
Published: July 2017

The scientific interest in (+)-usnic acid has grown because of its antitumor, cytotoxic, and antimicrobial activities as well as weight loss. However, overuse of usnic acid has been related with severe hepatotoxicity, making its use questionable. In this study, we decided to expand the knowledge of usnic acid biological activities by characterizing its effects on the mammalian myocardium as a potential pharmacological target. Usnic acid was isolated from samples of Cladonia substellata and submitted to chemical characterization. Molecular inclusion complexes of usnic acid with hydroxypropyl β-cyclodextrin were prepared to improve its water solubility. The effects of usnic acid on the atrial contractility and Ca2+ influx were carried out in the left atrium of guinea pigs and the effect of usnic acid on the L-type Ca2+ current was performed in rat ventricular cardiomyocytes enzymatically isolated. To evaluate the membrane integrity of cells subjected to usnic acid, we used histological procedures. Usnic acid reduced atrial contraction with an EC50 of 43.0±1.0 μM. This effect was related to a reduction of Ca2+ entry in myocardial cells. In isolated cardiac myocytes, usnic acid at 100 μM inhibited the L-type Ca2+ current by 73.0%. In addition, usnic acid caused an irreversible myocardial contracture, reflecting a serious disturbance of the intracellular Ca2+ homeostasis. Such an effect could not be ascribed to tissue death because cell membrane integrity was confirmed by histological observation. Taken together, our results show that usnic acid impairs cardiac function. Clearly more studies will be necessary to allow further applications of this natural product.
Tunneling currents between carbon nanotubes inside the 3-dimensional potential of a dielectric matrix
Authors: Tsagarakis M. S. , Xanthakis J. P.
Published: July 2017

We have examined the tunneling currents between CNTs dispersed in a dielectric matrix as is normally the case in a tensile stress or toxic gas sensors. Due to the randomness of the immersion process the CNTs are at random angles and configurations between them, thus producing a 3-dimensional potential (3-D). We have produced a method that solves the Laplace equation for this type of problem and uses the WKB formulation to calculate the transmission coefficient between CNTs. We have then shown that the tunneling currents between a pair of CNTs depend critically on their relative angle and configuration. In particular we have shown that the tunneling currents do not occur only along a CNT tip to CNT tip configuration but other more efficient paths exist which give a current higher by two orders of magnitude from what a simple 1D theory would give. On the other hand the tunneling current between non-coplanar CNTs is negligible. We conclude that such phenomena cannot be analyzed by a simple 1-dimensional WKB theory and the percolation threshold necessary for conduction may be lower than the one such a theory would predict.
Tuning the charge states in InAs/GaSb or InAs/GaInSb composite quantum wells by persistent photoconductivity
Authors: Tong Bingbing , Han Zhongdong , Li Tingxin , Zhang Chi , Sullivan Gerard , Du Rui-Rui
Published: July 2017

We have experimentally studied the persistent photoconductivity (PPC) in inverted InAs/GaSb and InAs/GaInSb quantum wells, which can be tuned into a bulk-insulating state by electron-hole hybridization. Specifically we tune the bulk band structure and carriers with light-emitting diode (LED) illuminations. The persistent photoconductivity could be negative or positive, depending on the specific doping structure and the illuminating photon energy. Compared to the widely-used electro-statically gating method, our findings provide a more flexible and non-invasive way to control the band structures and charge states in InAs/GaSb and InAs/GaInSb quantum wells (QWs).
Facile design and stabilization of a novel one-dimensional silicon-based photonic crystal microcavity
Authors: Salem Mohamed Shaker , Ibrahim Shaimaa Moustafa , Amin Mohamed
Published: July 2017

A novel silicon-based optical microcavity composed of a defect layer sandwiched between two parallel rugate mirrors is created by the electrochemical anodization of silicon in a hydrofluoric acid-based electrolyte using a precisely controlled current density profile. The profile consists of two sinusoidally modulated current waveforms separated by a fixed current that is applied to produce a defect layer between the mirrors. The spectral response of the rugate-based microcavity is simulated using the transfer matrix method and compared to the conventional Bragg-based microcavity. It is found that the resonance position of both microcavities is unchanged. However, the rugate-based microcavity exhibits a distinct reduction of the sidebands' intensity. Further attenuation of the sidebands' intensity is obtained by creating refractive index matching layers with optimized thickness at the bottom and top of the rugate-based microcavity. In order to stabilize the produced microcavity against natural oxidation, atomic layer deposition of an ultra-thin titanium dioxide layer on the pore wall is carried out followed by thermal annealing. The microcavity resonance position shows an observable sensitivity to the deposition and annealing processes.
Tokamak two-fluid ignition conditions
Authors: Guazzotto L. , Betti R.
Published: July 2017

This work focuses on modeling the properties needed by a plasma to reach ignition, where ignition is the condition in which fusion power is produced at the steady state without any external input power. We extend the classic work by Lawson giving the ptotτE (product between density, temperature, and energy confinement time) needed for ignition [J. D. Lawson, Proc. Phys. Soc. London, Sect. B 70, 6 (1957)] by improving the original zero-dimensional, single fluid model. The effect of multi-fluid physics is included, by distinguishing ions, electrons, and α particles. The effects of one-dimensional density and temperature profiles are also considered. It is found that the multi-fluid model predicts a larger Lawson product required for ignition than the single-fluid one. A detailed analysis of the energy confinement times for each species and energy equilibration times between species shows that the electron energy confinement time is the parameter more strongly affecting the Lawson product needed for ignition. It is also found that peaked profiles (of either temperature or density) require a smaller Lawson product for ignition than flat profiles.
Two-component, ab initio potential energy surface for CO2—H2O, extension to the hydrate clathrate, CO2@(H2O)20, and VSCF/VCI vibrational analyses of both
Authors: Wang Qingfeng (Kee) , Bowman Joel M.
Published: July 2017

We report an ab initio, full-dimensional, potential energy surface (PES) for CO2—H2O, in which two-body interaction energies are fit using a basis of permutationally invariant polynomials and combined with accurate potentials for the non-interacting monomers. This approach which we have termed “plug and play” is extended here to improve the precision of the 2-body fit in the long range. This is done by combining two separate fits. One is a fit to 47 593 2-body energies in the region of strong interaction and approaching the long range, and the second one is a fit to 6244 2-body energies in the long range. The two fits have a region of overlap which permits a smooth switch from one to the other. All energies are obtained at the CCSD(T)-F12b/aug-cc-pVTZ level of theory. Properties of the full PES, i.e., stationary points, harmonic frequencies of the global minimum, etc., are shown to be in excellent agreement with direct CCSD(T)-F12b/aug-cc-pVTZ results. Diffusion Monte Carlo calculations of the dimer zero-point energy (ZPE) are performed, and a dissociation energy, D0, of 787 cm−1 is obtained using that ZPE, De, and the rigorous ZPEs of the monomers. Using a benchmark De, D0 is 758 cm−1. Vibrational self-consistent field (VSCF)/virtual state configuration interaction (VCI) MULTIMODE calculations of intramolecular fundamentals are reported and are in good agreement with available experimental results. Finally, the full dimer PES is combined with an existing ab initio water potential to develop a potential for the CO2 hydrate clathrate CO2(H2O)20(512 water cage). A full normal-mode analysis of this hydrate clathrate is reported as are local-monomer VSCF/VCI calculations of the fundamentals of CO2.
Improvement in top-gate MoS2 transistor performance due to high quality backside Al2O3 layer
Authors: Bolshakov Pavel , Zhao Peng , Azcatl Angelica , Hurley Paul K. , Wallace Robert M. , Young Chadwin D.
Published: July 2017

A high quality Al2O3 layer is developed to achieve high performance in top-gate MoS2 transistors. Compared with top-gate MoS2 field effect transistors on a SiO2 layer, the intrinsic mobility and subthreshold slope were greatly improved in high-k backside layer devices. A forming gas anneal is found to enhance device performance due to a reduction in the charge trap density of the backside dielectric. The major improvements in device performance are ascribed to the forming gas anneal and the high-k dielectric screening effect of the backside Al2O3 layer. Top-gate devices built upon these stacks exhibit a near-ideal subthreshold slope of ∼69 mV/dec and a high Y-Function extracted intrinsic carrier mobility (μo) of 145 cm2/V·s, indicating a positive influence on top-gate device performance even without any backside bias.
Conducting wall Hall thrusters in magnetic shielding and standard configurations
Authors: Grimaud Lou , Mazouffre Stéphane
Published: July 2017

Traditional Hall thrusters are fitted with boron nitride dielectric discharge channels that confine the plasma discharge. Wall properties have significant effects on the performances and stability of the thrusters. In magnetically shielded thrusters, interactions between the plasma and the walls are greatly reduced, and the potential drop responsible for ion acceleration is situated outside the channel. This opens the way to the utilization of alternative materials for the discharge channel. In this work, graphite walls are compared to BN-SiO2 walls in the 200 W magnetically shielded ISCT200-MS and the unshielded ISCT200-US Hall thrusters. The magnetically shielded thruster shows no significant change in the discharge current mean value and oscillations, while the unshielded thruster's discharge current increases by 25% and becomes noticeably less stable. The electric field profile is also investigated through laser spectroscopy, and no significant difference is recorded between the ceramic and graphite cases for the shielded thruster. The unshielded thruster, on the other hand, has its acceleration region shifted 15% of the channel length downstream. Lastly, the plume profile is measured with planar probes fitted with guard rings. Once again the material wall has little influence on the plume characteristics in the shielded thruster, while the unshielded one is significantly affected.
Invariant solutions for the static vacuum equation
Authors: Leandro Benedito , Pina Romildo
Published: July 2017

We consider the static vacuum Einstein space-time when the spatial factor (or, base) is conformal to a pseudo-Euclidean space, which is invariant under the action of a translation group. We characterize all such solitons. Moreover, we give examples of static vacuum Einstein solutions for Einstein’s field equation. Applications provide an explicit example of a complete static vacuum Einstein space-time.
Ultra-low thermal conductivities along c-axis of naturally misfit layered Bi2[AE]2Co2Oy (AE = Ca, Ca0.5Sr0.5, Sr, Ba) single crystals
Authors: Li Lei , Yan Xue-Jun , Dong Song-Tao , Lv Yang-Yang , Li Xiao , Yao Shu-Hua , Chen Yan-Bin , Zhang Shan-Tao , Zhou Jian , Lu Hong , Lu Ming-Hui , Chen Yan-Feng
Published: July 2017

The intrinsically low thermal conductivity is fundamentally important for the development of high-performance thermoelectric and thermal insulating materials. Here, we observed ultra-low cross-plane thermal conductivities of naturally misfit layered single crystals Bi2[AE]2Co2Oy (AE = Ca, Ca0.5Sr0.5, Sr, and Ba) using the time-domain thermoreflectance method. These low values are comparable to the lowest conductivity in crystalline oxides and approaching the theoretical conductivity minimum of disordered crystals. Besides, these samples show the amorphous-like temperature dependence at cryogenic temperatures and the effective mean free paths are in the same magnitudes as the lattice constants.
Genotype by environment interaction for yearling weight in Nellore cattle applying reaction norms models
Authors: Ribeiro S. , Eler J. P. , Pedrosa V. B. , Rosa G. J. M. , Ferraz J. B. S. , Balieiro J. C. C.
Published: July 2017

In the present study, a possible existence of genotype × environment interaction was verified for yearling weight in Nellore cattle, utilising a reaction norms model. Therefore, possible changes in the breeding value were evaluated for 46 032 animals, from three distinct herds, according to the environmental gradient variation of the different contemporary groups. Under a Bayesian approach, analyses were carried out utilising INTERGEN software resulting in solutions of contemporary groups dispersed in the environmental gradient from –90 to +100 kg. The estimates of heritability coefficients ranged from 0.19 to 0.63 through the environmental gradient and the genetic correlation between intercept and slope of the reaction norms was 0.76. The genetic correlation considering all animals of the herds in the environmental gradient ranged from 0.83 to 1.0, and the correlation between breeding values of bulls in different environments ranged from 0.79 to 1.0. The results showed no effect of genotype × environment interaction on yearling weight in the herds of this study. However, it is important to verify a possible influence of the genotype × environment in the genetic evaluation of beef cattle, as different environments might cause interference in gene expression and consequently difference in phenotypic response.
No escape? Costs and benefits of leaf de-submergence in the pasture grass Chloris gayana under different flooding regimes
Authors: Striker Gustavo G. , Casas Cecilia , Kuang Xiaolin , Grimoldi Agustín A.
Published: July 2017

Elongation-induced leaf emergence is one way for plants to deal with complete submergence by ‘escaping’ from water. This growth strategy is hypothesised to be more beneficial under single long-term submergence than under repeated short-term submergence events (i.e. fluctuating environment), as costs of repeated plant ‘adjustment’ would exceed the initial benefits of shoot elongation. To test this idea, 2-week-old plants of Chloris gayana Kunth. cv. Fine Cut (a submergence-tolerant cultivar first selected by a screening experiment) were grown for 4 weeks under (i) control conditions, (ii) two 1-week submergence cycles, or (iii) one 2-week submergence cycle. Additionally, a set of plants were placed below nettings to assess the cost of remaining forcedly submerged. Impeding leaves emergence through nettings did not compromise survival when submergence was 1-week long, but determined the death of all plants when extended to 2 weeks. Growth as affected by flooding regime revealed that under one 2-week submergence event, plants accumulated a 2.9-fold higher dry mass than when they experienced the same submergence duration in separate events along 1week. The ‘escape’ strategy in the grass C. gayana, by which leaf contact with air is re-established, is essential for its survival, and it is more beneficial for plant growth under long-term submergence than under repeated short-term submergence cycles.
Lake and species specific patterns of non-diadromous recruitment in amphidromous fish: the importance of local recruitment and habitat requirements
Authors: Hicks Andy S. , Jarvis Matt G. , David Bruno O. , Waters Jonathan M. , Norman Marc D. , Closs Gerard P.
Published: July 2017

Understanding migratory life histories is critical for the effective management and conservation of migratory species. However, amphidromous migrations (fish hatch in streams, immediately migrate to the sea for a feeding period and return to fresh water as juveniles) remain understudied owing to the difficulties of tracking tiny larval fish. Despite this, it has widely been assumed that amphidromous fish have open, resilient populations, with marine-rearing larvae dispersing widely during their pelagic phase. In the present study we tested the hypothesis that when an alternative freshwater pelagic habitat is available, non-diadromous recruitment will be the dominant process in sustaining amphidromous fish populations, with implications for their connectivity and resilience. Otolith microchemical analyses of five species (three Galaxias (Galaxiidae), two Gobiomorphus (Eleotridae)) from paired systems on the South Island of New Zealand indicated that when a suitable freshwater pelagic habitat existed downstream, non-diadromous recruitment was the primary population-sustaining process, typically contributing >90% of recruits. In addition, not all species recruited from all lakes, indicating the importance of the largely unstudied role of species-specific amphidromous larval requirements. The results of the present study emphasise the need to better understand the dynamics of individual populations of amphidromous fish, and highlight the importance of understanding species-specific early life history requirements to fully understand their distributions and management needs.
The significance of theme
Authors: Davies Eirian C.
Published: July 2017

This paper explores the area of mismatches between the grammatical semantics of definite NPs and equivalent features actually operative in common ground in a given context of utterance. It does so with a view to examining the provision for accounting for their significance in terms of a Prague School approach and in terms of Systemic Functional Linguistics; and finds problems, of different kinds, with both these approaches. The rhetorical exploitation of such mismatching demonstrated by opening a text in medias res is discussed; and a third approach, that of “significance generation”, is proposed.

This approach of significance generation, which has previously been applied with respect to the meaningfulness of different sentence types, is proposed here as offering a new perspective on a confusing area of different kinds of meaningfulness in the treatment of theme. It involves a “change of gear” between features of meaning associated with the forms of language (linguistic semantics) and features operative in a context of their use. It is based on the claim that a single variable, such as ‘± given’, may have a different value according to whether it is derived from “context as is”, or from the semantics of the linguistic expression used in that context. For example, the linguistic semantics may indicate ‘+ given’, where there is nothing in context to validate this, and so the value as derived from context would be ‘− given’. By allowing for features from these two different sources to clash, this approach provides for a significance outcome, seen as a category in pragmatics which is the product of their combination, to be different from both of them: that is, here, “clash” , as opposed to either ‘+ given’ or ‘− given’. In so doing, I suggest that it provides a framework in terms of which to account for ways in which such opposition may be exploited for rhetorical effect.
Stance and voice in academic writing
Authors: Jiang Feng (Kevin)
Published: July 2017

Stance and voice are two crucial elements of social interactions in academic writing. However, their conceptual constructs are elusive and their linguistic realisation is not fully explored. A relatively overlooked feature is the “noun + that” structure, where a stance head noun takes a nominal complement clause (asadvantage thatinFlow cytometry offers the advantage that long term is available). This construction allows a writer to express authorial stance towards complement content and attribute a voice to that stance through pre-modification. This paper examines this construction in a corpus of 60 journal articles across six disciplines extracted from the BNC corpus. Developing an expressive classification of stance nouns and the possible voice categorisation, this study shows that the structure is not only widely used to project stance and voice, but that it displays considerable variation in the way that it is used to build knowledge across different disciplines.
北京話連去變調的成因及其與詞重音的關係
Authors: Higashi Takahiro , Wang Yunjia
Published: July 2017

抽象

北京話去聲連讀存在前去變成升調的社會變體，對於這種變體的成因，學界的看法不盡相同。本文用個案語音和文本分析的方法對北京話連去變調與詞重音之間的關係進行了研究。首先通過聲學測量和兩個聽辨實驗確定了變調樣本的重音格式，發現前去能夠變為升調的兩字組基本上都是聽感上的後重型。然後通過與若干輕音詞表的對比確認發生前去變調的雙音節詞在北京口語中不存在前重式。文章分析了北京話中兩種去聲變調格式——前去變為升調和後去變為低降調——的形成原因以及詞重音對變調格式的作用。作者認為，連去組合中的兩種變調格式實質上都是在重音保留本調原則、重讀音節同化非重讀音節原則和減少曲折原則的基礎上，相鄰音節音高同化作用的結果，同時，去聲連讀中的順向同化和逆向同化作用間接也說明了北京話的雙音節詞存在前重和後重兩種重音模式。
焦點–重音原則與漢語的「把」字句
Authors: Zhang Huili , Duan Haifeng , Pan Haihua
Published: July 2017

抽象

本文從焦點–重音匹配的角度來探討漢語日常口語中「把」字句謂語部分的複雜性。本文認為，與一般 [PP V] 結構不同，「把」字句是為了在句子層面上把位於「把」NP 後的謂語部分處理為資訊焦點而產生的一種特殊句式，而實現為資訊焦點的必要條件就是必須得到句法結構提供的核心重音。由於「把」字句中「把」後 NP 是謂語動詞的論元，其後的謂語部分只有在句法上形成分支結構才能夠得到核心重音，僅僅在韻律上形成分支結構是不夠的，因此光杆動詞和不形成句法分支的雙音節動詞都被排除在「把」字句之外。這個觀點也適用於其他動詞在尾的結構，例如被動句和「連…都」結構等。
Me and my custodial sentence
Authors: Dollinger Bernd , Froeschle Tobias
Published: July 2017

Trials are touchstones, which highlight rationalities of narrative identity construction. This study seeks to explore these rationalities from the perspective of young defendants. Predicated on narrative interviews before and after trials as well as on participant observations of the respective trials, we reconstruct identity-related categorizations of young defendants. Based on “Membership Categorization Analysis”, our focus is on the young defendants’ narrative depiction of their biographical criminal history and their self-presentation as subjects that have been (un)fairly treated and sentenced by penal professionals. Empirically, we use a case study to elaborate on the intricate challenge of identity construction when a severe punishment is imminent. Our results indicate a strategic form of narration, which mirrors the complexities and uncertainties of a trial.
Introduction
Authors: von Stackelberg Katharine T. , Macaulay-Lewis Elizabeth
Published: July 2017

[I am] working on the assumption that our psychical mechanism has come into being by a process of stratification: the material present in the form of memory-traces being subjected from time to time to a re-arrangement in accordance with fresh circumstances—to a re-transcription.

(Sigmund Freud to Wilhelm Fleiss, December 6, 1896, quoted in ...
Entombing Antiquity
Authors: Macaulay-Lewis Elizabeth
Published: July 2017

Woodlawn Cemetery in the Bronx, New York City, is home to some of the United States’ most prominent Neo-Antique mausolea, which used Classical and Egyptian motifs in their architecture and decor. Using the lens of Classical archaeology, this paper undertakes a formal analysis of funerary architecture in specific tombs belonging to Jay Gould, Francis Garavan, William Leeds, the Goelet Brothers, Jules S. Bache, and F.W. Woolworth. This discussion examines the architecture of these tombs and their reception of ancient architecture alongside archival material. It also discusses individual patrons’ and architects’ motivations for requisitioning such forms. Finally, this analysis demonstrates that through the appropriation and redeployment of ancient architecture and motifs and through the landscape design of the tombs in Woodlawn, these mausolea were rich nexuses of public and private self-fashioning and place-making, and were an expression of elite culture.
Reconsidering Hyperreality
Authors: von Stackelberg Katharine T.
Published: July 2017

The term “hyperreal” is generally associated with sites that take anachronistic decorative styles and eclectically recombine them into environments that claim to surpass mimicry by creating a fully immersive experience. At Franklin Smith’s Pompeia in Saratoga Springs, New York (1892); the Roman ruin garden of Louise du Pont Crowninshield at Hagley, Delaware (1924); and John Paul Getty’s recreation of Herculaneum’s Villa of the Papyri in Malibu, California (1974) hyperreality is a lens through which to examine the reintegration of Classical tropes into the domestic architecture of late nineteenth- and early twentieth-century America. In each of these sites hyperreality extended beyond the boundaries of the built artifact into the garden environment where the dialogue between built space and greenspace expresses an ongoing, living relationship between Classical past and contemporary present. The role of hyperreality in creating Neo-Antique made places and imaginative portals is considered in terms of enchaînement, the socially anchored process of deliberate breakage and reuse that recombines fragments to generate new forms of cultural self-perception.
Richard Baxter as Philosophical Theologian
Authors: Sytsma David S.
Published: July 2017

This chapter argues for Baxter’s importance as a theologian engaged with philosophy. Although Baxter is largely known today as a practical theologian, he also excelled in knowledge of the scholastics and was known in the seventeenth century also for his scholastic theology. He followed philosophical trends closely, was connected with many people involved in mechanical philosophy, and responded directly to the ideas of René Descartes, Pierre Gassendi, Robert Boyle, Thomas Willis, Thomas Hobbes, and Benedict de Spinoza. As a leading Puritan and nonconformist, his views are especially relevant to the question of the relation of the Puritan tradition to the beginnings of modern science and philosophy. The chapter introduces the way in which “mechanical philosophy” will be used, and concludes with a brief synopsis of the argument of the book.