bluuebunny/crossref_metadata_2025 huggingface dataset:
2D boron nitride nanosheets (BNNS) prepared by high-pressure homogenisation: structure and morphology
Authors: Guerra Valentina , Wan Chaoying , Degirmenci Volkan , Sloan Jeremy , Presvytis Dimitris , McNally Tony
Published: October 2018

Polycrystalline boron nitride nano-sheets (BNNS) were prepared via a scalable high-pressure homogenization process.
In situsynthesis of ultrafine metal clusters triggered by dodecaborate supramolecular organic frameworks
Authors: Qi Bin , Li Xin , Sun Liang , Chen Bo , Chen Hao , Wu Chenchen , Zhang Haibo , Zhou Xiaohai
Published: October 2018

A facile and universal approach to construct dodecaborate-based supramolecular organic frameworks (BOFs) decorated with ultrafine metal clusters.
The wettability of gas bubbles: from macro behavior to nano structures to applications
Authors: Huang Can , Guo Zhiguang
Published: October 2018

At the center of the image are two models of bubble wettability underwater, superaerophobicity and superaerophilicity. Around the image are the macroscopic behavior and microstructures of organisms in nature related to bubble wettability.
Reversibly photoswitchable alkoxy azobenzenes connected benzenetricarboxamide discotic liquid crystals with perpetual long range columnar assembly
Authors: Devi Sudha , Bala Indu , Gupta Santosh Prasad , Kumar Pravesh , Pal Santanu Kumar , Venkataramani Sugumar
Published: October 2018

Reversibly photoswitchable discotic liquid crystals (DLCs) with no change in columnar assembly.
Triazole-imidazole (TA-IM) derivatives as ultrafast fluorescent probes for selective Ag+detection
Authors: Lai Qi , Liu Qing , He Ying , Zhao Kai , Wei Chiyu , Wojtas Lukasz , Shi Xiaodong , Song Zhiguang
Published: October 2018

1,2,3-Triazole-imidazole derivatives (TA-IM) were prepared as fluorescent probes for silver ion detection.
Characterization and analysis of the aspect ratio of carbide grains in WC–Co composites
Authors: Yuan Xiaokun , Ji Yuan
Published: October 2018

To study the aspect ratio distribution of carbide grains in WC–Co composites, two novel approaches, namely grain shape ellipse calculation and five parameter analysis (FPA) methods, are reported in this work.
Synthesis of a benzyl-grafted alginate derivative and its effect on the colloidal stability of nanosized titanium dioxide aqueous suspensions for Pickering emulsions
Authors: Feng Meixi , Gu Chuanhai , Bao Chaoling , Chen Xiuqiong , Yan Huiqiong , Shi Zaifeng , Liu Xiaohong , Lin Qiang
Published: October 2018

TiO2 nanoparticles (nano-TiO2) easily undergo spontaneous aggregation and gravity sedimentation ascribed to their high adsorption energy, which significantly restrict their actual applications.
Fabrication of polytetrafluoroethylene nanofibrous membranes for guided bone regeneration
Authors: Park Jin-Young , Lee Jung-Hee , Kim Chun-Ho , Kim Young-Jin
Published: October 2018

In this study, PTFE nanofibrous membranes were fabricated by sintering the previously electrospun polytetrafluoroethylene (PTFE)/poly(ethylene oxide) (PEO) nanofibrous membranes.
Synergistic effect of adsorption coupled with catalysis based on graphene-supported MOF hybrid aerogel for promoted removal of dyes
Authors: Wan Yinjia , Wang Jianzhi , Huang Fei , Xue Yanan , Cai Ning , Liu Jie , Chen Weimin , Yu Faquan
Published: October 2018

A three-dimensional MIL-100(Fe)/graphene hybrid aerogel was fabricated for highly efficient removal of dye pollutants via synergistic adsorption and degradation.
Solventless, selective and catalytic oxidation of primary, secondary and benzylic alcohols by a Merrifield resin supported molybdenum(vi) complex with H2O2as an oxidant
Authors: Boruah Jeena Jyoti , Das Siva Prasad
Published: October 2018

Synthesis of a Merrifield resin supported dioxomolybdenum(vi) complex. The compound was well characterized and it catalysed the oxidation of alcohols to aldehydes or ketones with high TOF.
A fast screening model for drug permeability assessment based on native small intestinal extracellular matrix
Authors: Li Na , Sui Zhigang , Liu Yong , Wang Dandan , Ge Guangbo , Yang Ling
Published: October 2018

Application of a native decellularized small intestinal extracellular matrix for the construction of a fast screening model for drug absorption evaluation.
High-temperature chlorination of PbO and CdO induced by interaction with NaCl and Si/Al matrix
Authors: Wang Xinye , Xie Hao , Du Rong , Liu Yuying , Lin Pingfang , Zhang Jubing , Bu Changsheng , Huang Yaji , Zhang Wen
Published: October 2018

The chlorination process by NaCl was decoupled as indirect chlorination and direct chlorination, which were investigated separately.
Structural and electronic properties of KY(BH4)4: DFT+U study
Authors: Liu Chuan , Zhang Ting , Ye Xiangju , Zhang Xuemei , Zhang Shengli
Published: October 2018

Different functionals and basis sets of DFT+U level of theory are designed to investigate the structural and electronic properties of KY(BH4)4.
Stabilization of divalent Eu2+ in fluorosilicate glass-ceramics via lattice site substitution
Authors: Wang Chenhao , Chen Xiaotong , Luo Xue , Zhao Junjie , Qiao Xvsheng , Liu Yong , Fan Xianping , Qian Guodong , Zhang Xianghua , Han Gaorong
Published: October 2018

Both valency and ionic radius determine the Eu3+ → Eu2+ reduction on the substituted lattice sites in glass-ceramics.
Multiple actions of poly(ethylene octene) grafted with glycidyl methacrylate on the performance of poly(lactic acid)
Authors: Wang Xianzeng , Mi Jianguo , Wang Jie , Zhou Hongfu , Wang Xiangdong
Published: October 2018

Poly(ethylene octene) grafted with glycidyl methacrylate (POE-g-GMA) was employed to improve the rheological and thermal properties, toughness, and foaming behaviors of poly(lactic acid) (PLA) through a chain extension effect.
Solvent-free hydrogenation of cyclohexene over Rh-TUD-1 at ambient conditions
Authors: Benaissa Mhamed , Alhanash Abdullah M. , Mubarak Ahmed T. , Eissa Morad , Sahlabji Taher , Hamdy Mohamed S.
Published: October 2018

Total conversion of cyclohexene to cyclohexane was achieved in a liquid phase hydrogenation reaction at room temperature, 1 atm H2pressure and solvent-free system.
Wetting the lock and key enthalpically favours polyelectrolyte binding
Authors: Jeamet Emeric , Septavaux Jean , Héloin Alexandre , Donnier-Maréchal Marion , Dumartin Melissa , Ourri Benjamin , Mandal Pradeep , Huc Ivan , Bignon Emmanuelle , Dumont Elise , Morell Christophe , Francoia Jean-Patrick , Perret Florent , Vial Laurent , Leclaire Julien
Published: October 2018

We explored the factors governing the association between a polyanionic dyn[4]arene and a series of α-ω-alkyldiammonium ions of increasing chain length in water.
The methylation effect in prolonging the pure organic room temperature phosphorescence lifetime
Authors: Mao Zhu , Yang Zhan , Fan Zhenguo , Ubba Eethamukkala , Li Wenlang , Li Yang , Zhao Juan , Yang Zhiyong , Aldred Matthew P. , Chi Zhenguo
Published: October 2018

A methyl-substitution strategy is presented to prolong the phosphorescence lifetime due to a decrease in fractional free volumes.
Direct observation of the intermediate in an ultrafast isomerization
Authors: Porter Tyler M. , Wang Jiaxi , Li Yingmin , Xiang Bo , Salsman Catherine , Miller Joel S. , Xiong Wei , Kubiak Clifford P.
Published: October 2018

Using a combination of two-dimensional infrared (2D IR) and variable temperature Fourier transform infrared (FTIR) spectroscopies the rapid structural isomerization of a five-coordinate ruthenium complex is investigated.
Hybrid CuCoO–GO enables ultrasensitive detection of antibiotics with enhanced laser desorption/ionization at nano-interfaces
Authors: Wu Enhui , Feng Kun , Shi Rui , Lv Rui , Ouyang Fuzhong , Li Shawn S. C. , Zhong Jun , Liu Jian
Published: October 2018

A hybrid CuCoO–GO matrix allows for sensitive detection of various antibiotics in combination with MALDI TOF MS.
Energy yield modelling of perovskite/silicon two-terminal tandem PV modules with flat and textured interfaces
Authors: Lehr Jonathan , Langenhorst Malte , Schmager Raphael , Kirner Simon , Lemmer Uli , Richards Bryce S. , Case Chris , Paetzold Ulrich W.
Published: October 2018

Textured perovskite/silicon tandem photovoltaic modules are compared to state-of-the-art silicon single-junction photovoltaic modules by annual energy yield modelling.
Adhesion dynamics of confined membranes
Authors: To Tung B. T. , Le Goff Thomas , Pierre-Louis Olivier
Published: October 2018

Models of lipid membranes confined between adhesive planes exhibit frozen states or coarsening with coexistence of wrinkles with flat domains.
An EPDM/MVQ polymer blend based magnetorheological elastomer with good thermostability and mechanical performance
Authors: Qi Song , Yu Miao , Fu Jie , Zhu Mi , Xie Yuanpeng , Li Wang
Published: October 2018

We prepared an EPDM/MVQ blend based MRE with good thermostability and mechanical performance by using interface modification and polymer blending methods.
Microwave-assisted preparation of Ag/Ag2S carbon hybrid structures from pig bristles as efficient HER catalysts
Authors: Cova Camilla Maria , Zuliani Alessio , Puente Santiago Alain R. , Caballero Alvaro , Muñoz-Batista Mario J. , Luque Rafael
Published: October 2018

A microwave-assisted method for the production of HER catalyst Ag/Ag2S carbon hybrids through the valorisation of pig bristles is described.
Advances and challenges of green materials for electronics and energy storage applications: from design to end-of-life recovery
Authors: Gao Mengyao , Shih Chien-Chung , Pan Shu-Yuan , Chueh Chu-Chen , Chen Wen-Chang
Published: October 2018

Harnessing biomass to fabricate electronic devices has lately drawn significant research attention because it not only represents a promising strategy for making materials but is also beneficial for the sustainable development of technologies.
Ti3C2MXene as an excellent anode material for high-performance microbial fuel cells
Authors: Liu Da , Wang Ruiwen , Chang Wen , Zhang Lu , Peng Benqi , Li Huidong , Liu Shaoqin , Yan Mei , Guo Chongshen
Published: October 2018

Ti3C2MXene as the MFC anode facilitates bacterial adhesion and extracellular electron transfer, thus resulting in a power density of 3.74 W m−2.
Ultrathin porous Bi5O7X (X = Cl, Br, I) nanotubes for effective solar desalination
Authors: Liu Yang , Jiang Zheng , Zhang Xinyi , Shen Pei Kang
Published: October 2018

Ultrathin porous bismuth oxyhalide nanotubes are synthesized by a general and fast method for effective solar desalination.
NIR organic dyes based on phenazine-cyanine for photoacoustic imaging-guided photothermal therapy
Authors: Yan Yongchao , Chen Jiawen , Yang Zhijuan , Zhang Xiao , Liu Zhuang , Hua Jianli
Published: October 2018

Two NIR organic dyes based on phenazine-cyanine were successfully assembled with human serum albumin (HSA) forming appropriate size nanoparticles for photoacoustic imaging-guided photothermal therapy.
Dynamic and static excimer: a versatile platform for single component white-light emission and chelation-enhanced fluorescence
Authors: Kumar Virendra , Sk Bahadur , Kundu Subhankar , Patra Abhijit
Published: October 2018

Tailoring the formation of dynamic and static excimers in a C3-symmetric architecture led to efficient generation of white light and sensitive detection of Fe3+ and Al3+ in a single molecular platform.
The competition between mechanical stability and charge carrier mobility in MA-based hybrid perovskites: insight from DFT
Authors: Lee Jung-Hoon , Deng Zeyu , Bristowe Nicholas C. , Bristowe Paul D. , Cheetham Anthony K.
Published: October 2018

The combined effects of steric and hydrogen-bonding interactions enhance the elastic properties of MA-based hybrid perovskites relative to their inorganic counterparts. However, MA-induced octahedral tilting increases the effective carrier masses which results in a reduction in carrier mobility.
Paisaje y patrimonio territorial en las Denominaciones de Origen vinícolas del Valle del Ebro (España)
Authors: Climent-López Eugenio , Esteban-Rodríguez Samuel
Published: October 2018

Todo territorio se plasma en un paisaje y constituye el patrimonio de la sociedad que lo habita. La Denominación de Origen Protegida es una figura jurídica que contribuye a la construcción del territorio, aportando valor patrimonial y creando paisaje. Los objetivos de este trabajo son: identificar los componentes paisajísticos de las Denominaciones, ponderar el valor patrimonial de sus elementos territoriales y analizar la forma en que se gestionan y ponen en valor. Se han considerado los siguientes aspectos: características morfológicas del paisaje de viñedo, fisonomía de las bodegas, existencia de zonificación o cartografía de terroir, variedades de vid cultivadas, asociación de marcas de vino y topónimos locales y vinculación del turismo enológico con otras formas de turismo. Como casos de estudio se han elegido las siete Denominaciones de Origen Protegidas del Valle del Ebro (España). Se han observado similitudes y diferencias importantes entre ellas, pudiendo sintetizarse los resultados en la identificación de dos modelos diferentes: uno caracterizado por una alta valoración del terroir y las variedades autóctonas de vid, así como una fuerte vinculación al territorio, y otro con características opuestas.
La personalización de la producción en las marcas territoriales de vino de calidad diferenciada como efecto de la crisis
Authors: Esteban-Rodríguez Samuel , Climent-Lãpez Eugenio
Published: October 2018

La crisis econãmica en las Denominaciones de Origen Protegidas de vino (DOP) ha tenido manifestaciones como la reducciãn del número de bodegas y la caída del precio medio del hectolitro de vino. Sin embargo, el periodo de recesiãn también ha generado ajustes en otras dimensiones del sector. En este trabajo se analiza la evoluciãn del tipo de mercado de las DOP españolas durante la crisis, utilizando indicadores de personalizaciãn del producto. Los resultados ponen de manifiesto que durante la crisis se ha producido un aumento generalizado del número de marcas por bodega y una reducciãn de su tamaño medio. Pese a ello, existen diferencias territoriales asociadas a la situaciãn de partida.
Extended Target GMPHD Filter Based on Mean Shift and Graph Structure
Authors: Cheng Xuan , Song Liping , Ji Hongbing
Published: October 2018

In view of excessive measurements partition number, a large computation load of extended target tracking and leakage estimation when the extended targets cross, an extended target tracking algorithm based on GMPHD with mean shift and graph structure is proposed. Firstly, the kernel density estimation is used to eliminate the clutter measurements. Secondly, mean shift algorithm is adopted to divide the extended target measurements set, and sub-division is considered to carry or not based on the information fed back from the updated graph structure. Then, the extended target GMPHD algorithm is used to filter. Finally, the graph structure is updated by the one-step predicted value of the filtering result, and the updated graph structure information is used to guide the measurement partition at the next moment. Matlab simulation shows that the algorithm proposed decreases largely the number of measurements partition, reduces the computational complexity, and solves the leakage estimation problem when the targets cross.
Change Detection Algorithm Based on Discrete Wavelet Transforms and Neighborhood Fuzzy C-Means
Authors: Wang Fengping , Wang Weixing , Gao Ting , Chen Weiwei , Li Hongxia
Published: October 2018

A new algorithm on Discrete Wavelet Transform (DWT) and neighborhood FCM is proposed to detect change area from remote sensing image. First, the subtraction and ratio image are obtained by the subtraction and ratio method from the two registered remote sensing images; Then, the DWT is applied to the subtraction and ratio image, the region intensity-based and energy-based fusion rules is adopted to the low frequency and high frequency wavelet coefficients, and the inverse DWT is used to obtain the final difference image; At last, the neighborhood FCM is carried out to get the change areas, the spatial distance information and gray difference information are considered in the objective function of FCM, which could avoid misclassification and enhance the detection probability. Experimental results show that the proposed algorithm has strong ability to suppress noise and good detection results; the detection probability of unban change area can reach to 98.45%, whereas, the detection probability is up to 87.5% for the discontinuous forest change area.
Selection of Fuzzy Controller Membership Functions Based on Adaptive Gaussian Cloud Transform
Authors: Wang Yong , Li Cong , Huang Hanqiao , Zhou Huan
Published: October 2018

Aiming at the boundedness of existing methods of selecting membership functions, an adaptive Gaussian cloud transform algorithm which is guided by the threshold values of hybridization degree is proposed to construct concept hierarchy from original sample data, and then the number, shape and coverage area of membership functions can be derived from the distribution of Gaussian cloud. To test and verify the effectiveness of membership function that is extracted based on adaptive Gaussian cloud transform algorithm, a six-degree-of freedom model of unmanned aerial vehicles(UAV) is constructed, and a fuzzy controller of pitching angle is established with the platform of Simulink. The simulation results show that the fuzzy controller which includes membership functions derived from the distribution of Gaussian cloud transform can achieve perfect control performance of pitching angle and meanwhile obtain good dynamic response characteristics.
Influence of Ambient Velocity on the Performance of SCAL Indirect Air-Cooled Towers
Authors: Wan Chao , Chen Shengli , Lä Kai , Cheng Dongtao , Liu Xueliang
Published: October 2018

In order to explore the influence mechanisms of ambient wind speed on the performance of indirect air-cooled system, SCAL indirect air-cooled towers of a 600MW supercritical unit was taken as an example, and the corresponding calculation model was established. By the ways of CFD numerical simulation and field test, the variations along with ambient velocity of airflow field inside and outside the tower were simulated and the thermal performance of those towers under different ambient velocity was studied. The results showed that, the outlet resistance of air-cooled tower increased in pace with ambient velocity. Both temperature field inside the tower and pressure field inside and outside the tower were influenced by the ambient velocity to a large extent, while flow trajectory of flue gas inside the tower was basically similar. Moreover, the trends and changing laws of performance parameters from the level of segments and the tower were achieved. The conclusions would be of some reference significance for the optimal operation and design of indirect air-cooled system.
Research on Accurate Ultrasonic Positioning Error under the Special Environment
Authors: Zhu Guolei , Wang Yingmin , Wang Qi
Published: October 2018

This paper studies how to achieve the accurate position by an ultrasonic positioning system, which is for locating the autonomous vehicle in a special giant spherical container. A localization method using the least squares with a plane array which consists of four elements is proposed, the reason that causes the location error is analysed, and the relationship among the target distance and the array shape and the error of the ultrasonic positioning system is studied by Monte Carlo simulations. Finnally, in order to verify the positioning effect, the positioning experiment is done in an anechoic tank, the experimental results shown that when the ranging error is less than 20 mm, the positioning accuracy of x-y plane is less than about 30 mm.
An Authentication and Data Protection Scheme Research for Mass Storage Devices
Authors: Han Gang , Li Hui
Published: October 2018

Universal serial bus mass storage is a widely used storage device. In order to protect the user data security in USB storage devices, an effective authentication and data protection scheme is proposed. Using the attribute-based control technology, the security authentication of the USB device user is realized, and the privacy data fine-grained control of the USB device is realized. Security analysis shows that the scheme has strong security, it can resist replay attack, denial of service attack, the online password guessing attack, user impersonation attack, etc. Experimental performance analysis shows that the scheme has high efficiency in user registration, authentication and file decryption.
Control Strategies for Multi-UAV Simultaneous Arrival under Communication Topology Changing
Authors: Tan Yanying , Xue Liang , Zhang Yanning , Zhu Xiaoping
Published: October 2018

Aimed at changing in communication topology due to partial link/node failure in the battlefield, and for satisfying the weakest connectivity criteria of consensus algorithm, the strategy of judging in real time whether the communication topology among UAVs has a directed spanning tree or sub-tree and the strategy of acquiring the expected minimum partial link change suggestion for the topology containing a directed spanning tree again are designed. Based on the above strategies and selecting ETA (Estimated Time of Arrival) as coordinated variable, the consensus algorithm ensures that after some time all the members or part members of the UAVs arrive simultaneously. The strategy is put forword which the UAVS are controlled arriving simultaneously on the planed virtual sub-goal waypoints one by one along the flight path. Through the strategy, the UAVs fly together soon and arrive simultaneously at last. It is helpful to improve the survival rate of UAVs and preserve the communication connectivity of UAVs which is usually distance-dependent. The simulation results show that the above strategies are effective.
Mechanism and Improve Methods of Rudder Lock for Mechanically Controlled Aircraft
Authors: Liu Yan , Zhao Ke , Huang Jiangtao
Published: October 2018

Rudder Lock is a threat to flight safety, which should be carefully considered in the airworthiness certification. Since general aircrafts which are equipped with mechanical control system and controlled by unprofessional pilots becomes more and more popular, researches on rudder lock are still necessary. In this paper, a mechanically controlled medium sized transport is studied as an example. By analyzing the steady straight sideslip flight test data and flow field numerical simulation results, the mechanism of rudder lock is analyzed. Two aerodynamic improving methods including double-triangle dorsal fin and reducing set-back hinge balance are proposed. The flow field numerical simulation results show that double triangle dorsal fin can improve the stall characteristic of vertical tail, but the strong vortex will move the center of pressure forward, which worsens the rudder lock. Reducing set-back hinge balance can improve rudder lock effectively, while the hinge moment and rudder force will be increased, therefore the gearing ratio and tab should be carefully designed.
Factors driving diversity and succession of diatom assemblages in a Neotropical rainforest stream
Authors: Donato Rondón Jhon Charles , Abuhatab Aragón Yaira Ayarith
Published: October 2018

This study assessed short-term succession and related changes in diversity and succession of benthic diatom assemblages in a tropical rainforest stream in the biogeographic region of Chocó, Colombia. Diatom colonizationin situwas studied over a 60-day period, in which we analyzed the number of valves and the taxonomic changes. The Shannon index ranged from 2.06 to 3.02 bits. A total of 127 species were identified and the most abundant were acidophilic species such asEunotia intermedia,E. veneris,E. bilunaris var. mucophila,E. pirlaandE. bilunaris. A Detrended Canonical Correspondence Analysis (DCCA) was used to explore the succession of diatom assemblages and its driving environmental factors. The DCCA explained 74.1% of the correlation between environmental variables and diatom species and 16.2% of the data variance. The species fell into four groups, the first group (Eunotia incisa,Frustulia saxonica,Fragilaria capucina var. acatu, among others) was related to lower nitrate concentrations, acidic pH and lower water temperature. The second group (Fragilaria capensis,Gomphonema olivaceum,Cymbella gracilis, among others) was associated to higher alkalinity and lower solar radiation availability. The third group (Nitzschia obtusa,N. amphibia,Naviculadicta vitabunda,Navicula cryptocephala, among others) was related to lower phosphate, higher nitrate concentrations, lower pH, and higher temperatures. The fourth group (Eunotia soleirolli,Frustulia vulgarisandF. rhomboides)was associated with higher solar radiation and lower alkalinity. These results underscore the importance of diatom diversity in Neotropical streams and the relevance of small variations in environmental factors on the composition of reference assemblages of Neotropical fluvial systems.
Oral ulcers in patients treated with palbociclib: a case report
Authors: Alande Cédric , Fénélon Mathilde , Fricain Jean-Christophe
Published: October 2018

Introduction: Palbociclib is an approved drug in the treatment of women with advanced or metastatic estrogen receptor (ER)-positive, human epidermal growth factor receptor 2 (HER2)-negative, breast cancer. The purpose of this article is to present the first case ever described of oral ulcers caused by palbociclib. Observation: A case of drug-induced oral ulcers is reported. The patient was treated with a combination of palbociclib and Fulvestrant for a breast cancer relapse with pulmonary involvement. These ulcers were localized on the ventral face of the tongue and on the gum. A therapeutic combination of infrared laser biostimulation and a topical application of Dermoval® and Dynexan® were carried out. Palbociclib was concurrently discontinued. The lesions healed in about 15 days. Comments: Palbociclib is an inhibitor of cyclin-dependent kinases 4 and 6 (CDK 4/6). Thereby, it blocks many signaling pathways responsible for cell proliferation. This property weakens the oral mucosa and could be the cause of the observed ulcers. These latter having been particularly debilitating for the patient. Conclusion: Palbociclib-related oral aphthous ulcers are similar to those reported with other targeted therapies. The combination of infrared laser biostimulation and local corticosteroid therapy did not prevent the discontinuation of the cancer treatment.
Benign myoepithelioma of the hard palate: a clinical and histological diagnostic challenge. Case report and literature review
Authors: Maffi-Berthier Louis , Le pelletier François , Ejeil Anne-laure
Published: October 2018

Introduction: Myoepithelioma (ME) is a rare salivary gland tumor. Constructed aroung a clinical case, this article aims to gather up up-to-date epidemiological, clinical and histological data about myoeptihelioma with emphasis on the diagnostic approach and differential diagnoses, paraclinical exams and the main histological features reported for its characterization. Observation: A 41-year-old female, presenting a 1-year slowly enlarging palatine nodule was referred to the Oral Pathology Consultation. Clinical data and paraclinic examination were non-specific. A thorough histological examination, comparing clinical data with cyto-architectural and immunostaining profile of the tumor allowed a positive diagnosis of ME. Discussion: The clinical aspect of ME is close from other more frequent tumors within the same areas. Accordingly, its discovery is often incidental and its diagnosis histological. ME display variable architecture and composition, requiring full tumor examination for proper diagnosis. When benign, ME act as mixed tumor regarding local extension, prognosis and recurrence. Malignant ME behaves as a low-grade malignant tumor with metastatic potential. Conclusion: Despite its rarity, ME should be hypothesized in front of a palatine nodule. Clinician and pathologist should be particularly cautious regarding nature, malignancy and follow-up of this tumor, since few data are up-to-now available.
A comparative review of use of sulphate and phosphate salts for colonoscopy preparations and their potential for nephrotoxicity
Authors: Moulin Bruno , Ponchon Thierry
Published: October 2018

Background and study aims Colonoscopy is a widely used diagnostic procedure which requires prior cleansing of the bowel. Many different bowel cleansing preparations have been developed, all of which have specific advantages and disadvantages. This review compares two low-volume high-osmolarity bowel cleansing preparations, oral phosphate salts and oral sulphate salts, with a particular focus on risk of nephrotoxicity.

Patients and methods An electronic search of the Medline database was performed using the search terms “(phosphates OR sulfates) AND cathartics [MeSH Term] AND kidney” restricted to humans with a cut-off date of December 31, 2016.

Results Introduction of oral phosphate salts offered the advantage of low intake volume and low risk of bowel irritation compared to previous options. However, phosphate salts have been associated with renal toxicity (acute phosphate nephropathy [APN]), thought to arise due to perturbations of calcium and phosphate homeostasis as a consequence of increases in serum phosphate. This results in high concentrations of calcium phosphate in the distal tubule and collecting ducts of the kidney, where it may precipitate. Although APN is rare, it may lead to permanent kidney damage. For this reason, phosphate salts are contraindicated in vulnerable patient groups. As an alternative to phosphate salts, oral sulphate salts have recently been introduced. Because sulphate absorption from the intestinal tract is saturable, serum sulphate concentrations increase only minimally after ingestion. Furthermore, excretion of sulphate in the kidney is not accompanied by calcium excretion and urine calcium levels are unchanged. For these theoretical reasons, use of sulphate salts as bowel cleansing solutions is not expected to lead to calcium precipitation in the nephron.

Conclusions Oral phosphate salts are no longer recommended for routine use as bowel cleansing preparations as they carry significant risk of kidney damage and a safer alternative is available in the form of oral sulphate solutions. To date, use of sulphate salts has not been associated with elevations in serum creatinine or other markers of renal impairment, nor with clinical manifestations of kidney injury. Nonetheless, experience with sulphate salts in everyday practice is limited and physicians should be vigilant in detecting potential safety issues.
Do Hospital Doctors Screen for Diabetes?
Authors: Méan Marie , Waeber Gérard , Marques-Vidal Pedro
Published: October 2018

Background One in five hospitalized patients presents with previously undetected diabetes mellitus (DM). We assessed whether hospital doctors measure HbA1c in hospitalized patients and act consequently.

Methods Data from patients hospitalized between January 2013 and December 2014 in a Swiss teaching hospital was collected. We assessed the frequency of HbA1c measurements and the number of newly detected prediabetes or DM. We also examined whether HbA1c values were associated with the antidiabetic drugs prescription and reporting of DM in the discharge letter.

Results Of the 2618 patients studied, 298 (11.4%) had HbA1c measured, of whom 136 (45.6%) had no previous history of DM. Of the 136 patients without history of DM, 51 (37.5%) had prediabetic state and 23 (16.9%) had DM. Newly detected prediabetes or DM were reported in 5.8% (3/51) and 65.8% of cases (15/23), respectively. Only half of patients (11/23, 47.8%) with newly detected DM received antidiabetic drug treatment at discharge. Patients with newly detected DM (n=23) had a longer length of stay (median and interquartile range: 16 [9–25] versus 10 [8–16] days, p=0.028) compared to patients without DM, while no such differences were found regarding in-hospital mortality.

Conclusions Hospital doctors seldom prescribe HbA1c measurement in medical hospitalized patients. Prescription of HbA1c measurement leads to a high detection rate (53%) of (pre)DM among patients unaware of their status, but management and reporting of these conditions at discharge could be further improved.
Der Treitz-Muskel
Authors: Köln Magga Corts
Published: October 2018

Der Musculus suspensorius duodeni (Treitz-Muskel) fixiert die Biegung des Zwölffingerdarms. Er kann Passagestörungen am duodenojejunalen Übergang auslösen oder (seltener) die arterielle Versorgung des Mitteldarms beeinträchtigen. Ist er kaum oder nicht ausgebildet, nennt man die vorhandene bandartige Struktur Ligamentum suspensorium duodeni (Treitz-Band).
Pflasterstein und Fahrradschlauch
Authors: Schmid HP Eva C.
Published: October 2018

Morbus Crohn und Colitits ulcerosa sind die häufigsten chronisch-entzündlichen Darmerkrankungen (CED) in Deutschland. Die Krankheiten haben viele Gemeinsamkeiten, unterscheiden sich aber auch hinsichtlich einiger Aspekte.
Flut der Mediatoren
Authors: Hufen-Kemper Wulf
Published: October 2018

Das Mastzellaktivierungssyndrom (MCAS) oder Mastzellmediatorsyndrom ist durch eine gesteigerte Aktivität und Vermehrung von Mastzellen geprägt, die unkontrolliert Entzündungsmediatoren wie Zytokine ausschütten. Aufgrund der unspezifischen Klinik mit schubweisen Entzündungsphasen einschließlich Darm-, Haut- und Leistungsstörungen ist die Erkrankung schwer zu identifizieren und bleibt häufig lange unentdeckt. Anamnese und vor allem Laborparameter ermöglichen eine diagnostische Abgrenzung und eröffnen Therapieoptionen unter anderem zur immunologischen Regulation und Histaminreduzierung.
Steuerliche Abzugsfähigkeit eines Arbeitszimmers
Authors: Dornbusch Hans-Ludwig
Published: October 2018

Ein Arbeitszimmer zu Hause, welches so gut wie ausschließlich beruflich genutzt wird, kann zumindest teilweise steuerlich abgesetzt werden. Das gilt unter gewissen Bedingungen und nur, wenn die Praxis keinen geeigneten Raum bietet. Auch beruflich bedingte Einrichtungsgegenstände in den privaten vier Wänden können abgesetzt werden. Bei Kosten, die für das gesamte Zuhause anfallen, kann der Anteil, der auf das Arbeitszimmer fällt, geltend gemacht werden.
Schießpulver und Abführmittel
Authors: Ell-Beiser Helga
Published: October 2018

Früher verwendete man den Faulbaum als Bestandteil von Schießpulver. Der Baum wird aber auch als Heilmittel eingesetzt. Die Rinde des Gewöhnlichen Faulbaums als auch des Amerikanischen Faulbaums zählt zu den Anthranoiddrogen und wirkt laxierend, hydragog und antiresorptiv.
Peroral endoscopic myotomy (POEM) is effective in treatment of noncardiac chest pain caused by hypercontractile esophageal motility disorders: results of the POEM-HYPE-Study
Authors: Albers David , Frieling Thomas , Dakkak Dani , Kuhlbusch-Zicklam Rita , Töx Ulrich , Gittinger Mathis , Schumacher Brigitte
Published: October 2018

Background Noncardiac chest pain (NCCP) is recurrent angina pectoris-like pain without evidence of coronary heart disease in conventional diagnostic evaluation. In gastroenterology, managing of patients with NCCP is ambiguous to detect gastroesophageal reflux and hypercontractile esophageal motility disorders. Recently, peroral endoscopic myotomy (POEM) was established as treatment option in achalasia. However, limited data exist on the effectivity of POEM in NCCP with hypercontractile esophageal motility disorders.

Material and methods In this prospective study (POEM-HYPE), we evaluated 14 patients with NCCP and hypercontractile esophageal motility disorders (type III achalasia, n = 7; hypercontractile esophagus, n = 6; distal esophageal spasm, n = 1). All patients underwent standardized diagnostic work-up including esophagogastroduodenoscopy with esophageal biopsies, high-resolution esophageal manometry, and combined intraluminal impedance and pH testing before and 3 weeks after POEM. A standardized symptom questionnaire was disposed before POEM, 3 weeks after, and every 6 months after the POEM.

Results After POEM, 12 patients showed significant symptom relief (pre-Eckardt score: 7.78 ± 1.47, 3 weeks post: 1.64 ± 1.44, 6 months: 2.0 ± 1.84 and 1.86 ± 1.89 after 15.0 ± 10.0 months post-intervention). High-resolution manometry showed significant reduction in integrated relaxation pressure (pre-POEM: 24.74 ± 18.9 mm Hg, post-POEM: 13.8 ± 16.5 mm Hg) and distal contractile integral (pre-POEM: 2880 ± 3700 mmHg*s*cm, post-POEM: 1109 ± 1042 mmHg*s*cm). One lesion of the submucosal tunnel occurred as a moderate adverse event and was handled endoscopically. The long-term clinical success rate was 85.7 %. No severe gastroesophageal reflux occurred after interventions. Two patients required secondary therapy with injection of botulinum toxin in the tubular esophagus and balloon dilation.

Conclusion The results suggest that POEM is an effective and safe therapeutic option for patients with NCCP and hypercontractile esophageal motility disorders.
Endoscopic full-thickness resection in the colorectum: a single-center case series evaluating indication, efficacy and safety
Authors: Haasnoot Krijn , van der Spek Bas , Meischl Christof , Heine Dimitri
Published: October 2018

Background and study aims Endoscopic full-thickness resection (eFTR) allows en-bloc and transmural resection of colorectal lesions for which other advanced endoscopic techniques are unsuitable. We present our experience with a novel “clip first, cut later” eFTR-device and evaluate its indications, efficacy and safety.

Patients and methods From July 2015 through October 2017, 51 eFTR-procedures were performed in 48 patients. Technical success and R0-resection rates were prospectively recorded and retrospectively analyzed.

Results Indications for eFTR were non-lifting adenoma (n = 19), primary resection of malignant lesion (n = 2), resection of scar tissue after incomplete endoscopic resection of low-risk T1 colorectal carcinoma (n = 26), adenoma involving a diverticulum (n = 2) and neuroendocrine tumor (n = 2). Two lesions were treated by combining endoscopic mucosal resection and eFTR. Technical success was achieved in 45 of 51 procedures (88 %). Histopathology confirmed full-thickness resection in 43 of 50 specimens (86 %) and radical resection (R0) in 40 procedures (80 %). eFTR-specimens, obtained for indeterminate previous T1 colorectal carcinoma resection, were free of residual carcinoma in 25 of 26 cases (96 %). In six patients (13 %) a total of eight adverse events occurred within 30 days after eFTR. One perforation occurred, which was corrected endoscopically. No emergency surgery was necessary.

Conclusion In this study eFTR appears to be safe and effective for the resection of colorectal lesions. Technical success, R0-resection and major adverse events rate were reasonable and comparable with eFTR data reported elsewhere. Mean specimen diameter (23 mm) limits its use to relatively small lesions. A clinical algorithm for eFTR case selection is proposed. eFTR ensured local radical excision where other endoscopic techniques did not suffice and reduced the need for surgery in selected cases.
Bauchhirn unter Stress
Authors: Hinteregger-Männel Jessica
Published: October 2018

Um Verdauungsvorgänge zu kontrollieren und zu regulieren, arbeiten das enterische Nervensystem (ENS) und das zentrale Nervensystem (ZNS) zusammen. Bei Reizdarmpatienten lässt sich häufig ein erhöhter Sympathikotonus nachweisen, der die Magen-Darm-Tätigkeit reduziert. Einen entscheidenden Einfluss auf die neuronale Steuerung der Verdauung nehmen auch Bakterien im Darm, die über Neurotransmitter mit dem ZNS kommunizieren können.
Eine Schamanin kämpft
Authors: Lauerer Matthias
Published: October 2018

Sie bewohnen die chilenische Wüste und müssen sich heute gegen die Gier der Neuzeit wehren: Die Atacameños. Für die Kultur und Natur hat es einschneidende Konsequenzen, wenn immer mehr Lithium abgebaut und geothermale Energie gewonnen wird. Eine Schamanin setzt sich gegen den Raubbau ein.
Zur Leistungsvalidierung neuropsychologischer Testergebnisse – eine Übersicht
Authors: Spirig Esther , Jokeit Hennric
Published: October 2018

Der vorliegende Artikel bietet eine Übersicht zur Forschung und Praxis der Leistungsvalidierung neuropsychologischer Testergebnisse. Im Zentrum stehen dabei der Begriff der Leistungsvalidierung sowie seine Abgrenzung zum bisher verwendeten Begriff der Beschwerdenvalidierung. Zielgruppe sind mit Gutachten befasste Neurologen, Psychiater, Psychologen, Juristen und Rechtsanwender. Konzipiert ist der Artikel als ein Leitfaden zur Interpretation von Minderleistungen insbesondere im neuropsychologischen und verhaltensneurologischen Untersuchungskontext. Die Diskussion zur Leistungsvalidierung von Testergebnissen und ihrer psychologischen, medizinischen, rechtlichen und ökonomischen Bedeutung soll die Leserschaft für mögliche Fehlerquellen bei der Interpretation von Minderleistungen sensibilisieren und dadurch die reflektierte Anwendung von Leistungsvalidierungsverfahren sowie eine gut fundierte Interpretation von Minderleistungen fördern.
Enhanced Contouring of Local Flaps
Authors: Sclafani Anthony , Lin Jiahui
Published: October 2018

Scars and flaps represent a disruption of the normal skin contour, shape, and texture. Successful reconstruction of facial defects with local flaps requires prior planning to choose the correct reconstructive method. However, thorough preoperative planning should include consideration of adjunctive procedures to improve expected postoperative results as well as potential procedures to improve less-than-ideal results. Approaching facial reconstruction holistically allows the surgeon to soberly assess his/her reconstructive results and attain outstanding appearance.
Facial Scar Improvement Procedures
Authors: Newberry Christopher , Thomas J. , Cerrati Eric
Published: October 2018

Scars are a natural part of dermal healing following lacerations, incisions, or tissue loss. The ideal scar is narrow, flat, level with surrounding tissue, and difficult for the untrained eye to see due to color match and placement parallel to relaxed skin tension lines; however, scarring that is dyspigmented, hypertrophied, widened, contracted, or atrophic can be aesthetically displeasing or causing functional limitations. When the scar has unfavorable characteristics, scar revision is often indicated and the cosmetic surgeon must be knowledgeable of the minimally invasive as well as surgical techniques to improve aesthetics, reduced reoccurrence, or correct functional limitations.
Computed Tomography Assessment of Canal Centering Ability Using Hand and Rotary Instruments - an In Vitro Study
Authors: Arora Alka , Chaudhary Devendera , Krishan Shalu , Padda Bhupinder
Published: October 2018

Aim: The present in vitro study aims to evaluate canal preparation comparing centering ability of ProTaper, Mtwo, Wave One, Hand Ni-Ti K-files using Computed Tomography(CT). Materials and Methods: Sixty extracted permanent teeth were selected and decoronated at 11 mm from the apical end. Samples were randomly divided into 4 groups as ProTaper, Mtwo, Wave One, Hand Ni-Ti K-files. Teeth were scanned by CT Scanner. Sectioning was started at 1 mm from the apex up to coronal orifice. Nine levels at 1 mm each were chosen for evaluation in the Computed Tomography. The canals were prepared and a post instrumentation scan was again taken. The pre and postoperative CT images were superimposed at all nine levels. The canal centering ability was calculated. Statistical data was evaluated using One Way Analysis Of Variance test. Results: Amongst the rotary and reciprocal groups the best canal centering ability at the apical third was seen with Wave one. All the three groups behaved similarly in the middle and coronal thirds of the root canal. Conclusion: Keeping in mind the importance of apical third preparation and consistent behaviour in all directions, Wave One may be considered by far the best in the apical third.
Comparative Evaluation of Tensile Bond Strength of Nickel-Chromium Alloy to Dental Enamel Using Different Resin Cements – An In Vitro Study.
Authors: Kumar Manjit , Gupta Abhishek , Chabhra Vandana ,   Deepika
Published: October 2018

Aim: The aim of this study was to evaluate and compare the tensile bond strength of nickel-chromium alloy to dental enamel by using four different resin cements. Materials and Methods: 40 extracted central incisor teeth embedded in acrylic blocks were flattened not to expose dentin. Wax rectangular blocks of 5 mm length, 5 mm width and 1 mm height with a loop were invested and casted using Nickel-Chromium alloy by conventional induction casting method and sandblasted. Then casted rectangular blocks and 40 tooth embedded acrylic samples were divided into four groups (10 each) and cemented to tooth enamel following manufacturer's instructions as; GroupAcemented using RelyX U200, Group B cemented using Smartcem 2, Group C cemented using Multilink Speed and Group D cemented using Multilink N and then stored in artificial saliva for 24 hours. The direct pull tensile test was carried out on Universal Testing Machine at cross head speed of 0.5mm/min. Results: One way ANOVA showed a highly statistically significant (p<.01) difference between all the four resin cements. Post Hoc Tests- Multiple comparisons showed highly statistically significant (p< 0.01) difference between RelyX U200: Multilink N, Smartcem 2: Multilink Speed, Smartcem 2: Multilink N, Multilink Speed: Multilink N. Difference between RelyX U200 : Smartcem 2 and RelyX U200 : Multilink Speed was statistically significant(p< 0.05). Conclusion: Self etch resin cement (Multilink N) showed maximum mean tensile bond strength as compared to self-adhesive resin cements (Smartcem 2, RelyX U200 and Multilink Speed). Clinically the greatest advantage of self-adhesive cements is the easy and fast application technique. But this time saving technique is not as effective as self-etch resin luting agents. The presumed benefit of saving time with self-adhesive luting agents may only be realized at the expense of compromising bond strength.
Focal Cemento-Osseous Dysplasia of Lower Jaw in an Elderly Woman: Clinicopathological Features and Management in a Case Report
Authors: Kapoor Swati , Singh Gurnam , Kumar Dinesh , Bajaj Puneet , Bhardwaj Alka
Published: October 2018

Focal cemento-osseous dysplasia is a benign fibroosseous lesion that can be seen in dentulous and edentulous patients mainly in middle aged women. Although it is asymptomatic condition associated with vital teeth and needs no treatment but symptomatic patients require surgical debridement and sequestrectomy. We present a case report of symptomatic focal cemento-osseous dysplasia which requires surgical intervention.
Correction of the Lower Face and Neck
Authors: Frisenda Julia , Nassif Paul
Published: October 2018

Rejuvenation of the lower face and neck strives to reverse signs of aging while optimizing the patient's natural anatomy. Common features of an aesthetically pleasing lower face include a well-defined and appropriately balanced mandible and an acute cervicomental angle. Correction of the aging lower face and neck is accomplished through multiple surgical interventions, performed either alone or in combination. Determination of appropriate procedures is based on individual anatomic pathology. Intimate knowledge of facial anatomy and the complexity of the aging process is paramount to achieve a natural and aesthetic result. Thorough patient evaluation and counseling should precede any intervention. Specifically, the surgeon should be cognizant of the patient's skeletal structure, soft tissue distribution, muscular anatomy, and skin quality. Appropriate postoperative care and management of complications are vital to success.
Rejuvenation of the Midface
Authors: Freeman M.
Published: October 2018

In this article, the interested reader will learn when and how to apply different techniques on their patients, with the goal of safe, effective, natural looking, and long-lasting midface rejuvenation.