bluuebunny/crossref_metadata_2025 huggingface dataset:
Study on the Influence of Seasonal Diversity Deduction of Landscape Plants on Landscape Vision
Authors: Li Shengju , Wang Xue , Zhang Yaosheng , Zhang Yuehua , Lan Li
Published: December 2019

Urban garden landscape is a topic of great concern in the process of modern urban construction. It belongs to the landscape with vitality in the construction process. The plant landscape is also the product of the combination of economy, politics, culture and technology. The cold land plants belong to the only life-changing and cyclical elements in the garden design process. They use the seasonal changes of their distinctive features to realize the planning and design, which can effectively enrich the overall landscape effect. The seasonal changes of garden plants in cold regions mainly include space and color. The seasonal changes of color include leaves, flowers, fruits and branches, and the spatial characteristics are different periods of plants. In the process of realizing the garden configuration, it is important to comprehensively study the seasonal changes of plants, which can effectively improve the role of gardens. The study analyzes the influence of seasonal changes of garden plants on the landscape construction of garden space from three aspects: function, season and beauty. Therefore, the characteristics of seasonal changes of garden plants in cold regions are analyzed, so as to improve the rationality of landscape plant configuration in different seasons, and improve the level of garden landscape construction.
Composite MOFs as adsorbents for solid phase extraction combined with high performance liquid chromatography for the determination of polycyclic aromatic hydrocarbons in water
Authors: Li Yu , Yang Xiaojing , Li Baohui
Published: December 2019

Metal-organic frameworks (MOFs) are a kind of porous materials, which has large specific surface area, high porosity, diverse structure, excellent thermal stability and solvent stability etc. So, it has attracted extensive attention as an adsorbent for solid phase extraction (SPE). Polycyclic aromatic hydrocarbons (PAHs) are a kind of persistent organic pollutants that can lead serious hurts to the ecological environment and human health. The purpose of this paper is to optimize the types and proportion of mixed lanthanum based MOFs, and to improve the enrichment efficiency of SPE. Then a method to analysis PAHs by SPE-HPLC was established. Several main factors that could effected the pre-treatment efficient, such as the amount of adsorbent, the amount and pH of PAHs water sample, and the volume of eluent, were investigated. After optimized, the extraction of seven PAHs in water sample was achieved and the recovery rates were 80.67%, 80.06%, 54.69%, 82.62%, 118.87%, 70.30% and 95.57% respectively.
Investigation and Ecological Evaluation of Plant Resources on Campus of Jiamusi University
Authors: Liu Haoru , Yang Tianqi , Li Shengju , Gu Ye , Li Lan
Published: December 2019

The purpose of the systematic investigation of plant resources in Jiamusi University campus is to understand the composition, community characteristics and ecological distribution of plant resources in Jiamusi University, and to make rational use of them. In the process of investigation, the methods of actual step-by-step search and data search are adopted to carry out ecological evaluation. According to statistics, there are 113 kinds of plants on Jiamusi University campus, of which 93 are woody plants and 18 are herbaceous plants. Its growth environment is suitable for forest margin, undergrowth, hillside, and shrub and so on. Its main uses are greening, shading, dust prevention and noise reduction. It has high value. It is hoped that the research will provide a basis for the future construction of ecological civilization on campus.
Influence of High-Density electropulsing treatment on the interface corrosion characteristics of 316L steel in Lead-Bismuth eutectic at 823 K
Authors: Tian Shujian , Zhang Jianwu , Wang Yuying , Ma Yiyi , Wang Weishu
Published: December 2019

In order to find an effective method to improve the corrosion resistance properties of the candidate structural materials for lead-alloy cooled fast reactors, the 316L steel was treated by high density single elec-tropulsing. And then the interface corrosion characteristics in stagnant lead-bismuth eutectic (LBE) at 823 K for 1000 h were examined. The results show that electropulsing treatment (EPT) has a significant influence on microcosmic appearance and corrosion depth of the corroded specimens. All the specimens were subjected to dissolution corrosion, but EPT with a current density of 1828 A mm-2 can improve obviously the corrosion resistance and reduce the extent of local corrosion of 316L in LBE. In addition, the corrosion depth of the 1828 A mm-2 EPT specimen decreases by 38%, compared with that of the non-EPT specimens.
Study on Purification Effect of Artificial Wetland on Micro-polluted River
Authors: Changheng Zhao , Fengjuan Cha , Yongzhi Le , Guangsheng Zhou , Liping Qian
Published: December 2019

The research on the purification effect of artificial wetland on micro-polluted river and the detection of aquatic plants showed that TP, TN, NH3-N and COD in river were significantly lower than those in untreated river, indicating that the artificial wetland has a good purification effect on these water quality indicators; Testing from different wetland types, it can be seen that the effect of removing TP, TN, NH3-N and other factors in the subsurface wetland is the best, and the artificial surface wetland is second, while the effect of removing COD factor it is close to that of artificial surface wetland. As for the effect of removing pollution factors in artificial wetlands in different seasons, it can be drawn frow the test that the removal rate of TP and TN in artificial wetlands in different seasons can be obtained: wet season > normal season > dry season; and the removal rate of NH3-N and COD is normal season > dry season > wet season. In addition to the TN factor, the water quality during the dry season and normal season is significantly better than that during the wet season. Based on the analysis of the total amount of heavy metals absorbed by three kinds of aquatic plants, it can be concluded that different plant has different effect of removing TN and TP.
Treatment and benefit analysis of wastewater from construction of hydropower project
Authors: Ling Haitao , Su Cong , Xia Haotian , Suo Fei , Xiao Mengjie , Cheng Yue
Published: December 2019

In order to treat oil and other pollutants in downstream surface water causing by the construction process of a hydropower project, many methods were used. Besides that, a set of flocculation and precipitation facilities was designed as an emergency device for entire construction site. Good results were achieved in the treatment of construction wastewater, which has obvious economic and environmental benefits and has reference value for similar projects.
Application research of micro and nano bubbles in water pollution control
Authors: Liu Chang , Tang Yuchao
Published: December 2019

The article describes the characteristics of micro-nano bubbles in the water for a long time, large specific surface area, high gas-liquid mass transfer efficiency, high interface potential and free radical generation. The generation of micro-nano bubbles is introduced, such as dissolved gas release method and dispersion. Air method, electrolysis method, etc. It mainly summarizes the research and application of micro-nano bubbles in surface water treatment, groundwater remediation, industrial wastewater treatment and enhanced ozone treatment, as well as practical applications in ship operation, metal surface degreasing and fruit and vegetable growth.
MBBR+two-stage AO in upgrading and rebuilding project Of a sewage treatment plant in north China
Authors: Dongmei Shen , Cairui Yu , Yulan Gao , Xinwei Song , Jingsong Chu
Published: December 2019

A sewage treatment plant is located in the middle of Inner Mongolia. There is a large amount of slaughtering wastewater in the influent with high COD, SS, low annual temperature, poor nitrogen removal effect, and the effluent quality is only grade B. In order to solve the above problems, A\A\O-MBBR + high efficiency sedimentation tank continuous sand filter process was adopted to establish a new anaerobic tank and a first stage AO-MBBR bioreactor. The selection tank and partial oxidation ditch were transformed into the second stage A pool (anoxic pool), and the remaining part of the existing oxidation ditch was transformed into the second stage O pond (aerobic pool), which further removed phosphorus and reduced the SS in the sewage, and solved the problem of low temperature biological treatment in winter in the north of China. The quality of the effluent reached level A after the upgrading.
Chemical elution treatment of synthetic diamond production wastewater contaminated soil
Authors: SU Guang-chen , WANG Xiang-xiang , YANG Ying , ShI Hai-shan
Published: December 2019

The optimal removal conditions of heavy metal Coand Nicomposite contaminated soil were studied by the method of oscillating elution. The removal effects of different eluents on Coand Niat different concentrations were discussed.The results showed that the removal efficiency of citric acid with the concentration of 0.2mol•L-1was the best,and the removal rates of Coand Niwere 73.40% and 73.03%.On this basis, the effects of solid-liquid ratio, pH and elution time on the elution effect were investigated.The resultsshow that the trend of the two heavy metals affected by the above three factors is about the same. As the solid-liquid ratio decreases, the elution effect gradually increases, but the growth range is different.As the pH increases, the elution effect of the two heavy metals decreases. In addition, the removal rates of the two heavy metals show a trend of rising first, then stabilizing, and then continuing to rise. Considering economic factors, time cost and treatment effect, the best elution conditions aresolid-liquid ratio of 1: 20, pH value of 2 and elution time of 6 h.
Effects of Solanum nigrum, Crassocephalum crepidioides and Bidens pilosa straws on the nutrients content of soil and grape seedlings under cadmium stress
Authors: Huang Kewen , Gao Xinyu , Xiao Ling , Shu Junjiang , Li Qinyuan , Liao Ming’an
Published: December 2019

In order to improve the nutrients absorption of grape seedlings under cadmium (Cd) stress, the effects of Solanum nigrum, Crassocephalum crepidioides and Bidens pilosa straws on the nutrients content of soil and grape seedlings under Cd stress were studied by pot experiment. According to the results, the activity of soil phosphatase, soil catalase and soil sucrose by soil application of straws observed higher than CK to varying degrees. And soil application of straws increased the contents of soil alkaline nitrogen and available phosphorus in different degrees, while soil application of B. pilosa straws decreased the content of soil available potassium. In addition, the soil application of straws had a certain promoting effect on the total nitrogen content, total phosphorus content and total potassium content of grape seedlings compared with the CK. Among all treatments, C. crepidioides straws maximized the nutrients content in the shoots of grape seedlings, which could provide reference for grape cultivation in Cd-contaminated areas.
Study on cadmium accumulation characteristics of Solanum nigrum with different ploidies
Authors: Huan Yunmin , Jiu Zhouyang , Zhou Huixuan , Zhang Haoran , Huang Yong , Liao Ming’an
Published: December 2019

To study the cadmium accumulation characteristics of Solanum nigrum with different ploidies, the biomass, cadmium content and cadmium accumulation of diploid (Solanum photeinocarpum), tetraploid (Solanum photeinocarpum) and hexaploid (Solanum nigrum) were measured by a pot experiment. The results showed that the biomass of roots, stems, leaves and shoots of S. nigrum plants with different ploidy all ranked as follows: hexaploid > tetraploid > diploid. Cadmium content and cadmium accumulation in stems, leaves and shoots of hexaploid plants were significantly higher than those in tetraploid and diploid plants, and the cadmium translocation factor and translocation accumulation factor of hexaploid were the largest, too. Therefore, hexaploid S. nigrum had a highest ability to extract and transport cadmium, which can be used as an ideal plant for remediation of cadmium-contaminated soil.
Monitoring of soil moisture and irrigation forecast under the condition of drip irrigation in greenhouse
Authors: Wang Yuan , Wang Yangren , Wang Hao , Gong Chengqi
Published: December 2019

The accurate prediction of the soil moisture in greenhouse can improve the accuracy of irrigation forecast, thus saving water and increasing production. In this paper, the monitoring data were obtained from the greenhouse in Agricultural Demonstration Park of Northland Spring, Wuqing District, Tianjin. The soil moisture was predicted based on the GM (1,1) model, and the effect of water-saving and increased production was tested with the results of the economic irrigation research in the same area. The results show that the GM (1,1) model has a higher accuracy of soil moisture prediction. The correlation coefficient (R2) of the predicted value and the measured value is higher than 0.9; the small error probability P is 1; the mean relative prediction errors are all less than 0.1. Therefore, the GM (1,1) model can be used to predict soil moisture content.
Experimental Research on Enhanced Denitrification by Biological Agents
Authors: Liu Xiaoyu , Li Ruozheng , Li Zhengkun , Wang Can
Published: December 2019

Biological agents play a significant role in sewage treatment, with good removal effect, low sludge yield, good performance, and shorten the system start-up time, impact load resistance and stability enhancement.This paper describes the characteristics ofbiological agents and the effect of biological agents on wastewater denitrification was investigated through experiments, so as to provide effective basis support for the wide application of biological agents in the field of urban sewage treatment.The experiment showed that through reasonable addition of biological agents,the removal rates of COD,NH3-N and TNinlowpollutantsewage treatmentwere increased by 41%, 15% and 62% respectively.
Effect of exogenous melatonin on photosynthetic characteristics in cucumber seedlings under cadmium stress: a rapid detection method for the cadmium resistance
Authors: Wu Xinyi , Li Henggang , Luo Haotian , Lin Dian , Zhou Xiaoting
Published: December 2019

Water and soil pollution by cadmium have caused severe impact to environment, especially the inhibition of plant growth due to the cadmium stress. Taking cucumber seedlings as the materials, the effect of exogenous melatonin on cadmium uptake and photosynthetic capacity of cucumber seedlings under cadmium stress were studied. The results showed that the leaf area and chlorophyll content of cucumber seedling leaves were decreased after cadmium stress, while the decrease in leaf area was alleviated after the addition of exogenous melatonin. And there was less cadmium content in the roots of cucumber seedlings than that of cadmium stress treatment alone. Exogenous melatonin increased net photosynthetic rate (Pn) with the enhancement of stomatal conductance (Gs), transpiration rate (Tr) of cucumber seedlings. Further analysis of the chlorophyll fluorescence parameters revealed that the decrease of the effective quantum yield of photochemical energy conversion in PSII (Y(II)), and the photochemical fluorescence quenching coefficient (qP) by cadmium stress treatment were mitigated by addition of melatonin. The results indicated that exogenous melatonin could significantly alleviate the damage of cadmium stress on photosynthetic organs of cucumber seedlings, improve their photosynthetic capacity and reduce the damage caused by cadmium stress. It could be recommended to apply melatonin cultivation of cucumber under cadmium stress.
Study on the Change Ruleof Soil Water in Land of Different Use Types in Taihang Mountain Area
Authors: Zhang Guangying
Published: December 2019

This paper first studies the vertical structure and soil physical properties of Songlin Plot and Huangshan Plot in Chongling Small Watershed. Then, based on a series of field experiments, this paper obtains the basic parameters and infiltration characteristics of soil water movement in two runoff Plots with different land use types. After that, this paper analyzes the seasonal variation, vertical spatial change and the response to precipitation of land with different use types based on the data monitored in the runoff Plots under natural rainfall conditions. The result shows that the changes of soil water at different depths of Songlin Plot and Huangshan Plot are basically the same and that the soil water supply is completely controlled by precipitation. The water storage capacity of Songlin Plot is stronger, while the soil moisture variation of Huangpo Plot is higher, which indicates that Songlin Plot is more stable in terms of soil moisture content and stronger in self-adjustment.
The effects of slope length and coverage ratio on nitrogen and phosphorus loss in red soil Regions of southern China
Authors: Jing Qian , Liping Zhang
Published: December 2019

Soil nutrient loss not only reduces soil productivity, but also causes non-point source pollution and accelerates the eutrophication of surface water. In order to understand the effects of slope lengths (2m, 4m), vegetation coverage ratios (15%, 30%, 45%, 60%, 90%) on the mechanisms of soil nutrient loss, the research studied the simulated rainfall experiment with the slope gradient of 20°, the rainfall intensity of 2.0 mm/min and the time of producing runoff for about 30 min. The experimental results showed that the runoff coefficient is mainly affected by vegetation coverage ratio.
La création du parc naturel marin de Martinique : entre concertation et fragmentation
Authors: Mazurek Hubert , Arreghini Louis , Cochet Caroline , Daniel Justin , Gros-Désormeaux Jean-Raphaël , Pereira Debra
Published: December 2019

Le processus de concertation puis de création du parc naturel marin de Martinique a fait l’objet d’une analyse à partir de la participation de deux classes d’acteurs : les pêcheurs et les mouvements associatifs. Alors que l’objectif même du parc est de construire un consensus sur la nécessité de la conservation du milieu marin et d’y associer des outils de gestion concertée, la concertation a de fait fragmenté ces groupes d’acteurs. Le point de vue du législatif et du politique conforte cette analyse. Il montre les limites de ces approches et la nécessité d’une intégration plus efficace des secteurs sociaux et productifs pour la construction d’un projet territorial. La fragmentation des acteurs accroît de fait la vulnérabilité de la gouvernance de ces zones marines et littorales, à l’encontre des objectifs de protection et de conservation.
Matrix therapy is a cost-effective solution to reduce amputation risk and improve quality of life: pilot and case studies
Authors: Desgranges Pascal , Louissaint Taina , Godeau Bertrand , Barritault Denis
Published: December 2019

Introduction: Chronic, non-healing ulcers remain one of the most challenging clinical situations for health care practitioners. Often, conventional treatments fail and lead to amputation, further decreasing the patient's quality of life and resulting in enormous medical expenditures for healthcare systems. Here we evaluated the use of and cost-effectiveness of the RGTA (ReGeneraTing Agents) medical device CACIPLIQ20 (OTR4120) for chronic lower-extremity ulcers in patients with Leriche and Fontaine Stage IV peripheral arterial disease who were not eligible for revascularization. Methods: This uncontrolled pilot study included 14 chronic lower extremity ulcers in 12 patients in one hospital. The pilot study included 12 patients with TcPO2 < 20 mm Hg and ABPI < 0.5 who had either a minimum of one chronic lower extremity ulcer or a chronic ulcer related to amputation. OTR4120 was applied twice a week or until complete healing, for up to 12 weeks. Ulcer surface area reduction (%)after 2, 4, 8 and 12 weeks, appearance after 4 weeks, and healing after 12 weeks were measured and recorded. Results: A 35% reduction in ulcer size was achieved after 4 weeks. 7 (50%) out of 14 ulcers completely healed within 1 to 3 months of treatment. Discussion: OTR4120 is an effective therapeutic option for patients with chronic lower extremity ulcers, can provide major improvement of quality of life and has the added benefit of being a significant cost-effective solution for healthcare systems.
Predictors of technical difficulty with duodenal ESD
Authors: Kato Motohiko , Sasaki Motoki , Mizutani Mari , Tsutsumi Koshiro , Kiguchi Yoshiyuki , Akimoto Teppei , Mutaguchi Makoto , Nakayama Atsushi , Takabayashi Kaoru , Fujimoto Ai , Ochiai Yasutoshi , Maehata Tadateru , Kanai Takanori , Yahagi Naohisa
Published: December 2019

Background and study aims Duodenal endoscopic submucosal dissection (ESD) is still considered technically challenging; however, few studies have objectively analyzed predictors of the technical difficulty. Therefore, the aim of the current study was to elucidate predictors of the technical difficulty of duodenal ESD.

Patients and methods This was a retrospective observational study. From June 2010 to June 2017, a total of 174 consecutive patients with superficial duodenal epithelial neoplasia who underwent ESD were included in this study. We tried to identify predictors for technical difficulty of ESD by defining technical difficulty as either procedure time > 100 minutes or intraprocedural perforation. Moreover, we constructed a scoring system consisting of factors that were significant in the multivariate analysis.

Results The proportion of patients with technical difficulty was 34.5 %. In the multivariate analysis, lesion location in flexural part [odds ratio (OR), 2.61; 95 % confidence interval (CI), 1.02 – 6.68], larger lesion size (> 40 mm) (OR, 5.26; 95% CI, 2.15 – 12.9), and occupied circumference > 50 % of the duodenum (OR, 5.80; 95 % CI, 1.83 – 18.4) were associated with technical difficulty.

Conclusion A lesion location in flexural part, lesion size >40 mm and occupied circumference > 50 % were risk factors for technical difficulty of duodenal ESD.
Clinical Efficacy and Safety of Major Uterine Wall Resection and Reconstruction of the Uterus Combined with LNG-IUS for the Treatment of Severe Adenomyosis
Authors: Sun Cui , Ren Xiao-yan , Gao Yi , Liang Zhi-Gang , Mou Meng , Gu Heng-fang , Xiao Yan-Bing
Published: December 2019

Objective Aim of the study was to evaluate the clinical efficacy and safety of major uterine wall resection and reconstruction of the uterus (MURU) combined with a levonorgestrel-releasing intrauterine system (LNG-IUS) for the treatment of adenomyosis.

Methods Ninety patients diagnosed with adenomyosis were enrolled in this study. All participants were examined by transvaginal ultrasound (TVU) or magnetic resonance imaging (MRI). Serum levels of cancer antigen 125 (CA 125) were quantitatively measured. All patients underwent MURU in combination with LNG-IUS. The therapeutic safety of MURU was assessed during surgery and the patientsʼ stay in hospital. The clinical efficacy was evaluated by comparatively analyzing changes in dysmenorrhea, volume of menstrual blood, uterine volume and serum levels of CA 125 before, and at 3, 6 and 12 months following MURU.

Results All 90 patients enrolled in the study were successfully treated with MURU combined with LNG-IUS. No significant complications were observed during surgery and hospital stay. The mean operation time, intraoperative blood loss and length of hospital stay were 82.4 ± 13.8 min, 53.3 ± 20.3 ml, and 4.3 ± 0.8 days, respectively. Dysmenorrhea completely disappeared in all patients. Uterine volume and serum levels of CA 125 were restored to normal ranges. No recurrence of adenomyosis was observed during postoperative follow-up.

Conclusion MURU combined with LNG-IUS is an efficacious and safe treatment for severe adenomyosis. This combined technique is not only effective to manage severe adenomyosis but also preserves as much of the uterus as possible.
Soziokulturell sensible Prävention und Gesundheitsförderung. Entwicklung eines theoretischen Rahmenmodells und Ergebnisse einer Befragung unter Bewegungsförderungsprojekten.
Authors: Brand Tilman , Barbek Rieke , Gencer Hande , Samkange-Zeeb Florence , Zeeb Hajo
Published: December 2019

Ziel der Studie Entwicklung eines Rahmenmodells für soziokulturell sensible Prävention und Gesundheitsförderung und Analyse von Maßnahmen zur soziokulturell sensiblen Gestaltung in Bewegungsförderungsprojekten, die sich an Menschen mit Migrationshintergrund richten.

Methodik Basierend auf 9 Expert_inneninterviews und einem Rapid Review in den Datenbanken PubMed und PsycInfo wurden Maßnahmen und Domänen von soziokultureller Sensibilität in der Prävention und Gesundheitsförderung sowie deren Effektivität identifiziert. Die Domänen bildeten die Grundlage für eine Befragung von Ansprechpersonen von Bewegungsförderungsprojekten, die in der Datenbank „Gesundheitliche Chancengleichheit“ gelistet waren und Menschen mit Migrationshintergrund als Zielgruppe angegeben hatten.

Ergebnisse Es wurden 5 Domänen der soziokulturell sensiblen Anpassung von Präventionsangeboten identifiziert (äußerliche Anpassung, evidenzbezogene Anpassung, sprachliche Anpassung, einbeziehende Anpassung und soziokulturelle Anpassung der Tiefenstruktur). Die Nutzung von mehreren Anpassungsstrategien scheint die Wirksamkeit von Präventionsmaßnahmen zu erhöhen. Von den 48 kontaktierten Ansprechpersonen nahmen 29 an der Befragung teil. Fast alle Befragten gaben an, Maßnahmen aus 4 der 5 Domänen einzusetzen. Eine evidenzbezogene Anpassung erfolgte vergleichsweise selten.

Schlussfolgerungen Das erarbeitete Rahmenmodell kann sowohl zur Planung als auch für die Evaluation von Präventionsmaßnahmen verwendet werden, die sich an Menschen mit Migrationshintergrund richten. Die Befragung zeigt, wie soziokulturelle Sensibilität durch vielfältige Maßnahmen in der Bewegungsförderung verbessert werden kann.
Das Prostituiertenschutzgesetz und seine Umsetzung: eine
Bestandsaufnahme aus dem Gesundheitsamt Dresden
Authors: Stiehler Matthias
Published: December 2019

Am 1. Juli 2017 trat in Deutschland Prostituiertenschutzgesetz in Kraft.
Vorausgegangen war eine Diskussion, in der sich zahlreiche Institutionen und
Gruppen gegen dieses Vorhaben aussprachen. Die Hauptkritikpunkte waren ein ihm
zugrundeliegendes einseitiges Prostitutionsverständnis und die
Schwächung des Schutzraumes der Sexarbeiterinnen und Sexarbeiter durch
die behördlichen Kontrollen. Doch trotz der Kritik wurde das Gesetz
verabschiedet. Rechtliche Grundlagen Da es durch die Kommunen umgesetzt werden
muss, waren die Länder zu Ausführungsgesetzen verpflichtet. In
Sachsen verzögerte sich dessen Verabschiedung erheblich. Ursache war
eine zunächst bestehende Unklarheit, welches Fachressort verantwortlich
ist. Zudem gab es einen länger währenden politischen
Klärungsbedarf über die Finanzierung der den Kommunen
aufgebürdeten Mehrbelastungen. Erst ab 26. Juli 2018 konnte mit der
Umsetzung des Prostituiertenschutzgesetzes in Sachsen begonnen werden.
Erfahrungen In Dresden wurde daraufhin eine Struktur geschaffen, die eine
eindeutige Trennung zwischen der Gesundheitsberatung und der dem Ordnungsamt
zugewiesene Anmeldung der Prostituierten vorsieht. Auch die beiden Angebote des
Gesundheitsamtes für diese Personengruppe werden aufgrund
konkurrierender Bundesgesetze räumlich und personell konsequent getrennt
gehalten. Zugleich wurde ein neues Sachgebiet geschaffen, das beide
Beratungsstellen umfasst. Durch die gemeinsame Fachaufsicht soll verhindert
werden, dass innerhalb des Gesundheitsamtes die Arbeit für die
Sexarbeiterinnen und Sexarbeiter nach unterschiedlichen
Maßstäben erfolgt. Ob mit dem Prostituiertenschutzgesetz dem
beabsichtigten Schutzzweck gedient ist, darf nach den bisherigen Erfahrungen
zumindest angezweifelt werden. Dresden hat sich bei der Umsetzung
bemüht, durch klare Strukturen und interne Regeln möglichen
negativen Folgen des Gesetzes entgegenzuwirken.
Differentielle Indikation in der Versorgung von Patienten mit
psychischen Störungen
Authors: Dorr Florence , Lahmann Claas , Bengel Jürgen
Published: December 2019

Hintergrund Patienten mit psychischen Erkrankungen werden in
unterschiedlichen Versorgungssektoren und Fachgebieten behandelt. Die
Indikationsgrenzen zwischen psychiatrischer und psychosomatischer
Versorgung, zwischen Akut- und rehabilitativer Versorgung sowie zwischen der
ambulanten, teil- und vollstationären Versorgung können nur
unzureichend beschrieben werden. Eine sektorenbezogene Differenzierung in
der Zuweisung zu den unterschiedlichen Versorgungsangeboten ist kaum
erkennbar.

Ziel Übersicht zur empirischen Literatur zu differentiellen
Indikationskriterien.

Methode: Empirische Ergebnisse zu infrage kommenden differentiellen
Indikationskriterien werden referiert.

Ergebnisse Patientenbezogene Kriterien können nach
medizinischen Kriterien, Kriterien bezüglich des Behandlungsbedarfs
und persönlichen Kriterien unterschieden werden. Nur vereinzelt
sprechen Kriterien eindeutig für oder gegen ein bestimmtes
Versorgungssetting.

Diskussion Die Empirie ist insgesamt gering und beschränkt
sich auf Merkmalsvergleiche zwischen Patienten, die bereits in verschiedenen
Sektoren behandelt werden. Zur Beschreibung von differentiellen
Indikationskriterien und Zuweisungsmechanismen müssen die
strukturellen Rahmenbedingungen des Versorgungssystems einbezogen
werden.

Schlussfolgerung Der Bedarf an aussagekräftigen empirischen
Studien zur differentiellen Indikation bei psychischen Störungen ist
offenkundig. Perspektiven für eine gezielte Zuweisungssteuerung
werden diskutiert.
Wirkfaktoren in der Gruppentherapie: Fragebogen zur Messung der
therapeutischen Perspektive
Authors: Winter Friederike , Aguilar-Raab Corina , Blanck Paul , Schaller Georg , Vogel Eva , Mander Johannes
Published: December 2019

In der bisherigen Forschung hat sich Gruppentherapie als ökonomisch
und effektiv erwiesen. Es existieren bislang wenige Instrumente, um die
Wirkfaktoren des therapeutischen Prozesses in der Gruppentherapie empirisch
zu messen. Der Fragebogen zum Erleben von therapeutischen Prozessen in der
Gruppe für Therapeutinnen (FEPiG-T) zur Erfassung von allgemeinen
Wirkfaktoren aus der therapeutischen Perspektive wurde in dieser Studie
basierend auf Konzeptualisierungen von Bordin, Yalom und Grawe entwickelt
und validiert. Die FEPiG-T Subskalen zeigten gute interne Konsistenzen und
waren im Sinne der konvergenten Validität mit etablierten
Prozessmaßen assoziiert. Es zeigten sich Zusammenhänge der
Wirkfaktoren zu Beginn der Therapie mit der Reduktion interpersonaler
Probleme über die Zeit. Die Wirkfaktoren über den
Therapieverlauf waren trendmäßig mit der Symptomverbesserung
korreliert. In der Forschung könnte der korrespondierende Fragebogen
zur bereits etablierten Version für Patientinnen eine detaillierte
Untersuchung der Perspektiven im Therapieverlauf ermöglichen. In der
Praxis würde das Instrument eine Selbsteinschätzung
für Therapeutinnen und ein Feedback darüber bieten, ob
gerade Differenzen über die Wahrnehmung der aktuellen
Gruppenwirkfaktoren bestehen.
Outcomes of endoscopic submucosal dissection (ESD) during live endoscopy events (LEE) – a 13-year follow-up
Authors: Ebigbo Alanna , Freund Simone , Probst Andreas , Römmele Christoph , Gölder Stefan K. , Frauenschuh Julia , Marienhagen Joerg , Messmann Helmut
Published: December 2019

Background and study aims There are no data showing the outcome of ESD during live endoscopy events (LEE). ESD performed during the Augsburg Endo-Update LEE were compared with matched routine procedures with the aim of demonstrating non-inferiority of LEE ESD.

Patients and methods ESD performed during the Endo-Update between 2006 and 2018 were reviewed. The controls were routine procedures matched according to age, location and lesion size. Resection, recurrence, survival and complication rates, procedure time and propofol sedation were assessed. Clinically relevant margins were assumed for resection and complication rates, procedure time and propofol sedation quantity.

Results Thirty-eight ESD were performed in the given time period, and were compared with 38 matched routine ESD. En bloc and curative resection rates in the LEE group and in the control group were 100 % and 87 % as well as 84 % and 71 % respectively, while procedure times were 135 and 125 minutes, respectively. Non-inferiority was demonstrated for resection rates and procedure time. The complication rate was lower in the LEE group as compared with the control group (5 % vs 13 %) while propofol sedation was similar in both groups (863 mg vs 872 mg). Recurrence and 5-year survival rates for both groups were 4 % vs 0 % and 70 % vs 65% respectively.

Conclusions The resection rate and procedure time of ESD during LEE was non-inferior to those of routine ESD procedures. Comparison of the complication rates, however, was inconclusive owing to the low patient number and complication risk in both groups.
Small-caliber endoscopes are more fragile than conventional endoscopes
Authors: Nishizawa Toshihiro , Sakitani Kosuke , Suzuki Hidekazu , Yamakawa Tadahiro , Takahashi Yoshiyuki , Yoshida Shuntaro , Nakai Yousuke , Hata Keisuke , Ebinuma Hirotoshi , Koike Kazuhiko , Toyoshima Osamu
Published: December 2019

Background and study aims The repair costs of gastrointestinal endoscopes account for a significant proportion of the total budget of an endoscopy unit. This study evaluated the repair costs of small-caliber endoscopes and conventional endoscopes used in esophagogastroduodenoscopy (EGD).

Patients and methods A retrospective analysis of upper gastrointestinal endoscope damage and repair costs between April 2012 and May 2019 was performed at the Toyoshima Endoscopy Clinic. Conventional endoscopes (GIF-H260, GIF-HQ290, and GIF-H290Z) were used for transoral EGD while small-caliber endoscopes (GIF-XP260N and GIF-XP290N) were used for transnasal or transoral EGD.

Results Three small-caliber endoscopes and five conventional endoscopes were used for 1,031 procedures and 31,192 procedures, respectively. The number of procedures/damage incidence for small-caliber endoscope and conventional endoscopes was 344 and 1950, respectively. Damage incidence for small-caliber endoscopes was significantly higher than for conventional endoscopes (P = 0.014). Repair costs/procedure were $ 5.95 ± $132 for small-caliber endoscopes and $2.41 ± $115 for conventional endoscopes. Repair costs/procedure for small-caliber endoscopes were more than twice those for conventional endoscopes.

Conclusions Small-caliber endoscopes are more fragile than conventional endoscopes.
Efficient Conversion of Epoxides into Carbonates with CO2 and a Single Organocatalyst: Laboratory and Kilogram-Scale Experiments
Authors: Azzouz Rabah , Contreras Moreno Viviana , Herasme-Grullon Clara , Levacher Vincent , Estel Lionel , Ledoux Alain , Derrouiche Salim , Marsais Francis , Bischoff Laurent
Published: December 2019

Cheap and readily available 2-aminopyridine and related compounds can be used as organocatalysts for the conversion of epoxides into cyclic carbonates. This reaction gives high conversions under solvent-free conditions and is amenable to a kilogram-scale conversion under mild conditions.
Spinopelvic Alignment Parameters in Spondylolisthesis Patients Compared to Nonspondylolisthesis Patients
Authors: Alijani Babak , Ramzannejad Armin , Yousefzadeh-Chabok Shahrokh , Behzadnia Hamid , Emamhadi Mohammadreza , Davoudi-Kiakalayeh Ali , Bijani Enayatollah
Published: December 2019

Objective We aimed at describing spin pelvic alignment features in patients with degenerative spondylolisthesis (DS), in comparison with other patients complaining of low back pain but no evidence of spondylolisthesis on standard standing lateral lumbosacral X-ray.

Methods In this prospective descriptive study, patients with low back pain included in two groups of DS and non-DS patients, according to preoperative lumbosacral X-ray in standard standing lateral position. Patient’s demographic characteristics, as well as spinopelvic alignment parameters including pelvic incidence (PI), pelvic tilt (PT), sacral slope (SS), lumbar lordosis, and facet joint orientation, were collected. DS patients were compared with non-DS, age-matched control group.

Results DS patients were significantly obese (p = 0.031) and had a high PI (56.39 ± 11.5), SS (38.28 ± 10.32), and PT (18.52 ± 9.11), (p = 0.00, 0.01, 0.04, respectively). Moreover, segmental lordosis at L2–L3, L3–L4, and L5–S1 levels demonstrated a significant increase (p < 0.05). Facet joints at L4–L5 level were located more sagittally (37.5 ± 7.07 vs. 40.71 ± 6.33).

Conclusion PI, SS, and PT significantly increase in DS patients compared with non-DS group. Elevated segmental lordosis at high lumbar levels and sagittal orientation of facet joints were other features observed in DS patients.
Small-Molecule Amyloid Beta-Aggregation Inhibitors in Alzheimer's Disease Drug Development
Authors: Chowdhury Sharmin Reza , Xie Fangzhou , Gu Jinxin , Fu Lei
Published: December 2019

Alzheimer's disease (AD) is still an incurable neurodegenerative disease that causes dementia. AD changes the brain function that, over time, impairs memory and diminishes judgment and reasoning ability. Pathophysiology of AD is complex. Till now the cause of AD remains unknown, but risk factors include family history and genetic predisposition. The drugs previously approved for AD treatment do not modify the disease process and only provide symptomatic improvement. Over the past few decades, research has led to significant progress in the understanding of the disease, leading to several novel strategies that may modify the disease process. One of the major developments in this direction is the amyloid β (Aβ) aggregation. Small molecules could block the initial stages of Aβ aggregation, which could be the starting point for the design and development of new AD drugs in the near future. In this review we summarize the most promising small-molecule Aβ-aggregation inhibitors including natural compounds, novel small molecules, and also those are in clinical trials. Moreover, we briefly summarized some reported docking studies of small-molecule Aβ aggregation inhibitors. These will give us an idea about the chemical features required to design novel small molecules with anti-Aβ aggregation properties.
Individual Patient Data Pooled Analysis of Randomized Trials of Bivalirudin versus Heparin in Acute Myocardial Infarction: Rationale and Methodology
Authors: Bikdeli Behnood , McAndrew Thomas , Crowley Aaron , Chen Shmuel , Mehdipoor Ghazaleh , Redfors Björn , Liu Yangbo , Zhang Zixuan , Liu Mengdan , Zhang Yiran , Francese Dominic P. , Erlinge David , James Stefan K. , Han Yaling , Li Yi , Kastrati Adnan , Schüpke Stefanie , Stables Rod H. , Shahzad Adeel , Steg Philippe Gabriel , Goldstein Patrick , Frigoli Enrico , Mehran Roxana , Valgimigli Marco , Stone Gregg W.
Published: December 2019

Background Individual randomized controlled trials (RCTs) of periprocedural anticoagulation with bivalirudin versus heparin during percutaneous coronary intervention (PCI) have reported conflicting results. Study-level meta-analyses lack granularity to adjust for confounders, explore heterogeneity, or identify subgroups that may particularly benefit or be harmed.

Objective To overcome these limitations, we sought to develop an individual patient-data pooled database of RCTs comparing bivalirudin versus heparin.

Methods We conducted a systematic review to identify RCTs in which ≥1,000 patients with acute myocardial infarction (AMI) undergoing PCI were randomized to bivalirudin versus heparin.

Results From 738 identified studies, 8 RCTs met the prespecified criteria. The principal investigators of each study agreed to provide patient-level data. The data were pooled and checked for accuracy against trial publications, with discrepancies addressed by consulting with the trialists. Consensus-based definitions were created to resolve differing antithrombotic, procedural, and outcome definitions. The project required 3.5 years to complete, and the final database includes 27,409 patients (13,346 randomized to bivalirudin and 14,063 randomized to heparin).

Conclusion We have created a large individual patient database of bivalirudin versus heparin RCTs in patients with AMI undergoing PCI. This endeavor may help identify the optimal periprocedural anticoagulation regimen for patient groups with different relative risks of adverse ischemic versus bleeding events, including those with ST-segment and non-ST-segment elevation MI, radial versus femoral access, use of a prolonged bivalirudin infusion or glycoprotein inhibitors, and others. Adherence to standardized techniques and rigorous validation processes should increase confidence in the accuracy and robustness of the results.
Robust data cleaning methodology using online support vector regression for ultra-short baseline positioning system
Authors: Liu Xianjun , Liu Xixiang , Zhang Tongwei , Wang Qiming
Published: December 2019

Ultrashort baseline (USBL) acoustic positioning system is a significant navigation means for human occupied vehicle due its simple structure, convenient operation, and large-scale-maneuver capacity. In order to improve the quality of USBL raw data effectively and efficiently, a robust data cleaning methodology using Online Support Vector Regression (OSVR) is proposed to deal with measurement outliers and missing values. In this study, we applied sliding-window samples to train the OSVR model for online time series prediction and then utilized the obtained one-step ahead prediction to detect and replace outliers or supplement missing values. The experimental results of the online test show that the proposed methodology can satisfy the requirement of real-time navigation and acquire consecutive and consistent positioning data for USBL. In comparison with the raw data, the root mean square error results in longitude and latitude are reduced by 91.75% and 85.53%, respectively. In addition, such methodology outperforms other data cleaning algorithms based on Least Square (LS) and kernel recursive LS.
Analogy model test by experimental simulation of the subsidence zone associated with the 3 September 2017 North Korean nuclear test
Authors: Xu Xiaohui , Li Jie , Wang Mingyang , Xu Tianhan , Kou Jia
Published: December 2019

The surveillance of nuclear tests relies on the seismic network and the interferometric synthetic aperture radar (InSAR) data. Using the surface displacements such as subsidence craters caused by a nuclear test is an effective tool to monitor and estimate source characteristics of nuclear tests. In this study, based on the scaling laws of the process of subsidence crater formation, we developed an explosive model test in a vacuum chamber using the yield and buried depth estimated by Wang et al. to simulate the surface subsidence zone and collapse the crater associated with the 3 September 2017 North Korean nuclear test, and compared with their research results. The explosive simulation apparatus independently developed by the Army Engineering University of PLA is also introduced. The simulated results indicate that the radii of the subsidence zone and collapse crater are ∼257 m and ∼154 m, respectively, which are close to the empirical formula and InSAR observations. The explosive model test in a vacuum chamber could help to characterize the surface displacements induced by nuclear tests and provide an effective method for nuclear monitoring and characterization around the world.
Winner-takes-all mechanism realized by memristive neural network
Authors: Wang J. J. , Yu Q. , Hu S. G. , Liu Yanchen , Guo Rui , Chen T. P. , Yin Y. , Liu Y.
Published: December 2019

Winner-takes-all (WTA), an important mechanism in neural networks of recurrently connected neurons, is a critical element of many models of cortical processing. However, few WTA neural networks have been realized physically, especially by memristor networks. In this work, we have designed and implemented a neural network with memristor-based synapses to realize the WTA in a neural system. Neuronal self-excitatory, excitatory, and inhibition by other neurons have been demonstrated. Competitions between two neurons, among three neurons, and between two groups of neurons are realized based on the memristive neural network. The winner neuron or winner group can suppress the other neuron(s) or other group(s) of neurons and dominate the neuronal firing. This work paves the way for further realization of complex models of cortical processing with memristive neural networks.
MPRAD: A Monte Carlo and ray-tracing code for the proton radiography in high-energy-density plasma experiments
Authors: Lu Yingchao , Li Hui , Flippo Kirk A. , Kelso Kwyntero , Liao Andy , Li Shengtai , Liang Edison
Published: December 2019

Proton radiography is used in various high-energy-density (HED) plasma experiments. In this paper, we describe a Monte Carlo and ray-tracing simulation tool called multimegaelectronvolt proton radiography (MPRAD) that can be used for modeling the deflection of proton beams in arbitrary three dimensional electromagnetic fields as well as the diffusion of the proton beams by Coulomb scattering and stopping power. The Coulomb scattering and stopping power models in cold matter and fully ionized plasma are combined using interpolation. We discuss the application of MPRAD in a few setups relevant to HED plasma experiments where the plasma density can play a role in diffusing the proton beams and affecting the prediction and interpretation of the proton images. It is shown how the diffusion due to plasma density can affect the resolution and dynamical range of the proton radiography.
Magnetic field induced ferrofluid droplet breakup in a simple shear flow at a low Reynolds number
Authors: Hassan Md Rifat , Wang Cheng
Published: December 2019

The breakup phenomenon of a ferrofluid droplet in a simple shear flow under a uniform magnetic field is numerically investigated in this paper. The numerical simulation, based on the finite element method, uses a level set method to capture the dynamic evolution of the droplet interface between the two phases. Focusing on small Reynolds numbers (i.e., Re ≤ 0.03), systematic numerical simulations are carried out to analyze the effects of magnetic field strength, direction, and viscosity ratio on the breakup phenomenon of the ferrofluid droplet. The results suggest that applying a magnetic field along α = 45° and 90° relative to the flow direction initiates breakup in a ferrofluid droplet at a low capillary number in the Stokes flow regime, where the droplet usually does not break up in a shear flow alone. At α = 0° and 135°, the magnetic field suppresses breakup. Also, there exists a critical magnetic bond number, Bocr, below which the droplet does not rupture, which is also dependent on the direction of the magnetic field. Additionally, the effect of the viscosity ratio on droplet breakup is examined at variable magnetic bond numbers. The results indicate a decrease in the critical magnetic bond number Bocr values for more viscous droplets. Furthermore, more satellite droplets are observed at α = 45° compared to α = 90°, not only at higher magnetic field strengths but also at larger viscosity ratios.