bluuebunny/crossref_metadata_2025_split huggingface dataset:
Relationship between Body Mass Index and Articular Injuries Accompanying Primary Anterior Cruciate Ligament Tear in Male Knees: A Retrospective Observational Study
Authors: Ulusoy Gökhan Ragıp , Kızılgöz Volkan , Sivrioğlu Ali Kemal 
Published: July 2019

AbstractThe objective of this study was to determine the effects of body mass index (BMI), as a modifiable risk factor, on meniscal, chondral, and ligamentous injuries, as well as on bone marrow edema accompanying anterior cruciate ligament (ACL) rupture. This retrospective observational study analyzed 84 male patients who underwent primary ACL reconstruction from 2015 to 2018. Magnetic resonance imaging was performed within 6 weeks of injury. Bone bruise, tendon, ligament, meniscal, and muscle injuries were evaluated. The surgery was performed within 3 months after the injury. Detailed arthroscopic findings (chondral, meniscal, and ligamentous injuries) were documented intraoperatively. The weight and height were used to quantify BMI (weight in kg/height in m2). Of the 84 male patients, 58 had associated articular injuries. The median age of the study population was 24 years (minimum: 17 years, maximum: 43 years) years. The mean BMI, height, and weight were 27.12 ± 0.78 kg/m2, 1.73 ± 0.01 m, and 81.17 ± 21.52 kg, respectively. The relationship between higher BMI and associated articular injuries (95% confidence interval [CI]) was statistically significant (p < 0.001). There was a statistically significant relationship between weight and associated articular injuries (p = 0.003). Height and age were not predictive factors. Higher BMI and weight were significant risk factors for associated articular injuries in the presence of ACL tear. Height was not found to be a predictive factor. Higher BMI was associated with increased risk of medial and/or lateral meniscus tears and bone bruising.
Scaphoid Fracture Patterns—Part One: Three-Dimensional Computed Tomography Analysis
Authors: Drijkoningen Tessa , Mohamadi Amin , Luria Shai , Buijze Geert A. 
Published: July 2019

Abstract
Objective Using three-dimensional (3D) computed tomography models of acute scaphoid fractures, we looked for differences between volumetric size of the fracture fragments, recognizable groups, or a shared common fracture area.
Methods We studied 51 patients with an adequate computed tomography scan of an acute scaphoid fracture using 3D modeling. Fracture surfaces were identified and fragment volumetric size of the fracture fragments was measured. A principal component analysis was used to find groups. Density mapping was used to image probable common fracture areas in the scaphoid.
Results Forty-nine of 51 fractures had a similar pattern. It was not possible to identify subgroups based on fracture pattern. The mean volumetric size of the fracture fragments of the proximal (1.45 cm3 ± 0.49 cm3 standard deviation [SD]) and distal fracture fragments (1.53 cm3 ± 0.48 cm3 SD) was similar. There was a single common fracture area in the middle third of the bone. In the distal third, there were no horizontal fractures through—but only directly proximal to—the tubercle suggesting that these would be best classified as distal waist fractures.
Conclusion Acute scaphoid fractures mainly occur in the middle third of the bone and tend to divide the scaphoid in half by volumetric size of the fracture fragments. There were two distinct grouping patterns: fractures through the proximal and middle third were horizontal oblique, whereas fractures of the distal third were vertical oblique. It seems that scaphoid fractures might be classified into proximal pole fractures, a range of waist fractures, and tubercle avulsion fractures.
Level of evidence This is a Level IV study.
Does enhanced footwear comfort affect oxygen consumption and running biomechanics?
Authors: Lindorfer Julia , Kröll Josef , Schwameder Hermann 
Published: July 2019

AbstractComfort as an essential parameter for running footwear is gaining importance in footwear research and development, and has also been proposed to decrease injury rate and improve metabolic demand in the paradigm of the comfort filter. The aims of this study were to determine differences in oxygen consumption and biomechanical variables associated with lower extremity injuries in response to running shoes of differing comfort. Fifteen male runners attended two testing sessions including an incremental lactate threshold test, a comfort assessment and treadmill running trials for the biomechanical and physiological measurements. Statistical analyses were performed on oxygen consumption, spatio‐temporal variables including foot‐ground angle and coupling angle variability of 12 couplings in five stride phases. No decrease in oxygen consumption was found in the most preferred shoe condition. Investigation of potential biomechanical contributors to changes in metabolic demands revealed differences in the stride rate between the most and least preferred condition. In coupling angle variability analyses, only one coupling (ankle dorsiflexion/plantarflexion to knee varus/valgus) yielded a significant difference between conditions in the phase including the touch down. Based on the findings of this study, previous suggestions regarding positive effects of enhanced footwear comfort during running cannot be supported – neither on economy nor on injury prevention perspective. However, a prospective study of lower extremity injury combined with measurements of biomechanical and physiological variables seems to be required for a definite support or contradiction of the comfort filter.
Polarized electron-beam acceleration driven by vortex laser pulses
Authors: Wu Yitong , Ji Liangliang , Geng Xuesong , Yu Qin , Wang Nengwen , Feng Bo , Guo Zhao , Wang Weiqing , Qin Chengyu , Yan Xue , Zhang Lingang , Thomas Johannes , Hützen Anna , Büscher Markus , Rakitzis T Peter , Pukhov Alexander , Shen Baifei , Li Ruxin 
Published: July 2019

Abstract
We propose a new approach based on an all-optical set-up for generating relativistic polarized electron beams via vortex Laguerre-Gaussian (LG) laser-driven wakefield acceleration. Using a pre-polarized gas target, we find that the topology of the vortex wakefield resolves the depolarization issue of the injected electrons. In full three-dimensional particle-in-cell simulations, incorporating the spin dynamics via the Thomas-Bargmann Michel Telegdi equation, the LG laser preserves the electron spin polarization by more than 80% while assuring efficient electron injection. The method releases the limit on beam flux for polarized electron acceleration and promises more than an order of magnitude boost in peak flux, as compared to Gaussian beams. These results suggest a promising table-top method to produce energetic polarized electron beams.
Localisation and transport in bidimensional random models with separable Hamiltonians
Authors: Corona-Patricio G , Kuhl U , Mortessagne F , Vignolo P , Tessieri L 
Published: July 2019

Abstract
We consider two bidimensional random models characterised by the following features: (a) their Hamiltonians are separable in polar coordinates and (b) the random part of the potential depends either on the angular coordinate or on the radial one, but not on both. The disorder correspondingly localises the angular or the radial part of the eigenfunctions. We analyse the analogies and the differences which exist between the selected 2D models and their 1D counterparts. We show how the analogies allow one to use correlated disorder to design a localisation length with pre-defined energy dependence and to produce directional localisation of the wavefunctions in models with angular disorder. We also discuss the importance of finite-size and resonance effects in shaping the eigenfunctions of the model with angular disorder; for the model with disorder associated to the radial variable we show under what conditions the localisation length coincides with the expression valid in the 1D case.
Kovats Retention Index analysis of flavor and fragrance compound using Biplot Statistical method in gas chromatography systems
Authors: Idroes R , Japnur A F , Suhendra R , Rusyana A 
Published: July 2019

Abstract
A lot of retention parameters have been introduced and used in chromatographic instrumentation analysis, one of which is the retention index. Retention index is a secondary parameter which in its calculation requires data retention time and dead time. This study uses data from flavor and fragrance retention indices with a variation of columns, boiling points and log Kow which aims to identify the level of similarity between compounds based on retention index using biplot statistical method. Biplot analysis is used to view object relationships based on the variables. The results showed that biplot could describe the relationship of a compound as an object and its retention index as a variable of 99.45 %. Based on the results, the compounds can be classified into three groups. The first group has a specific retention index that is lower than other groups. The second group has a high Log Kow whereas the third group is dominated by the influence of DB-Wax column compared to other columns. Columns DB-1, OV-101, and DB-5 have a positive correlation with the correlation level close to 1.00.
Isolation of Pectin from coffee pulp Arabica Gayo for the development of matrices membrane
Authors: Hasanah U , Setyowati M , Edwarsyah  , Efendi R , Safitri E , Idroes R , Heng L Y , Sani N D 
Published: July 2019

Abstract
Pectin from Arabica Gayo coffee pulp has been successfully isolated using citric acid as a solvent. The pectin extracted from the coffee pulp is determined by the extraction conditions. This study aims to produce pectin from dried coffee extract using citric acid using two factors, namely the difference factor of citric acid (1: 5 and 1: 20 b/v) and extraction time 75 and 150 minutes. The optimum ratio of Arabica Gayo coffee pulp with citric acid was 1:20 b/v with rendemen 7,8 % with 125 minute extraction time and at the temperature of 80 °C and pH 4. The methoxyl content of isolated pectin was 12.71 % and has been determined as high methoxyl pectin (HMP). The result of analysis with FTIR is known that the extract produced is pectin with comparison with pectin standard. The pectin has been used as a matrix membrane and showed its smooth surface gel form and smaller diameter from scanning electron microscopy (SEM).1
Deposition of polydopamine on the surface of Polyvinylidene Fluoride (PVDF) membrane as A UV-Shielding layer
Authors: Muchtar S , Wahab M , Mulyati S , Riza M , Arahman N 
Published: July 2019

Abstract
This paper discusses about the influence of polydopamine layer in enhancing UV resistance of PVDF membrane for membrane photocatalytic reactor application. The PVDF membrane was prepared by common NIPS method using DMAc as a solvent and PEG as a pore-forming additive. The polydopamine layer was deposited on the membrane surface by the facile dip-coating method through Tris-buffered dopamine polymerization. The UV-shielding effect of PDA layer was studied by comparing the changes in pure and PDA coated membrane coating before and after UV irradiation. The studied effects are in terms of changes in chemical, morphological structure and mechanical properties which observed by means of ATR-FTIR, FESEM instrumental analysis, and tensile measurement, respectively. The IR analysis showed that after PDA coating, the membrane surface is rich of catecholamine groups which greatly contributed as free radical scavengers. The change in chemical structure was seen on pure membrane which attributed to the rearrangement of polymer chemical structure caused by UV-induced photodegradation. FESEM imaging results showed that with PDA coating the membrane surface showed minimal damage in comparison to that of non-coated PVDF membrane. These results altogether confirmed, that the PDA layer can protect the membrane surface from UV-initiated free radicals attack.
Phytochemical screening and In vitro Cytotoxic activity of Hexane extract of Temurui (Murraya koenigii (Linn.) Spreng) leaves against Human Cervical Cancer (HeLa) cell line
Authors: Amna U , Halimatussakdiah H , Wahyuningsih P , Saidi N , Nasution R , Astryna S Y 
Published: July 2019

Abstract
Cancer is a chronic disease caused by the growth of abnormal cells in body tissues and includes the second deadly disease in the world where the number of sufferers increases every year. Some chemotherapy prevention agents using synthetic drugs have been used to treat cancer, but it is relatively expensive and cause poisoning that limits their use. The aim of this study was to evaluate the phytochemical and develop natural anticancer drugs from hexane extract of Temurui (M. koenigii (Linn.) Spreng) leaves. The phytochemical analysis showed the presence of terpenoids and steroids. Then, the hexane extract of Temurui leaves was screened for in vitro cytotoxic activity against human cervical cancer (HeLa) cell line by using the MTT assay. The result showed a very strong cytotoxic activity effect with CD50 values less than 1 μg/ml. This indicated as a potent cytotoxic activity agent for HeLa cancer cells. Therefore, it is expected to conduct further research for cytotoxic test of other cancer cell lines so that it could be developed as raw materials for the manufacture of new drugs.
Synthesis of Kieserite fertilizer by using natural magnesite Ore as raw material
Authors: Mulana F , Mustanir  , Fuadi Z 
Published: July 2019

Abstract
Magnesite ore is one kind of rare minerals that can be found in area of Aceh Besar District Province of Aceh, NTT Province and Southeast Sulawesi Province. The further treatment of this rare magnesite mineral containing mainly magnesium to form kieserite fertilizer product with composition magnesium and sulphur would be more benefit. The purpose of this study is to synthesize kieserite fertilizer from magnesite ore as raw material with addition of sulphur and to see whether the composition of prepared product meet the specification of kieserite fertilizer as stated in SNI 02-2807-1992. The synthesis was carried out by mixing the treated natural magnesite ore and the solid sulphur in a ball mill. The product of kieserite fertilizer was then analyzed according to SNI 02-2807-1992. The results showed that kieserite fertilizer can be produced from raw material of magnesite ore and a product met the SNI 02-2807-1992. The prospective product of kieserite fertilizer was obtained after mixing magnesite ore with addition 20 wt% of solid sulphur. The composition of prepared kieserite fertilizer was in range of 26.72 - 30.20 wt% for MgO, 20.29 - 23.93 wt% for S and 0.40 - 0.76 wt% for free water content with the prospective product composition was 30.20 wt% for MgO, 23.93 wt% for S and 0.45 wt% for free water content.
Effect of H2SO4 concentration on cellulose isolation from palm empty fruit bunches.
Authors: Nilawati N , Rahmi R , Desiyana L S 
Published: July 2019

Abstract
Isolation of cellulose from palm empty fruit bunches had been conducted. Isolation was conducted with H2O2 30% and H2SO4 with various concentrations (20, 30, 40, and 50%). Hydrolysis and bleaching processes were performed for 90 minutes. The obtained cellulose was characterized by Fourier Transform Infrared (FTIR), X-Ray Diffraction (XRD) and Scanning Electron Microscope (SEM). FTIR analysis confirmed the typical bands of cellulose in the sample. XRD patterns showed increasing H2SO4 concentration on hydrolysis process increased crystallinity of cellulose. However, at H2SO4 concentration more than 40% the crystallinity of cellulose reduced. It was due to the reduction of crystalline part of cellulose.
Low density composite board from sugarcane residue and polymer of high density polyethylene
Authors: Sofyana  , Hisbullah  , Alam P N , Zuhra  
Published: July 2019

AbstractBagasse is one of biomass wastes often found in the sugar industry. In large quantities, such wastes are a problem for environmental sustainability because it is not handled properly. Likewise, plastic wastes are an environmental problem with difficulty coping. Both of these wastes can be integrated into a product with economic value by processing it into a composite board. The research aims to produce low-density composite boards and to study the process variables that influence its manufacturing process, namely the compressing temperature and Maleic Anhydride (MAH) as a coupling agent. HDPE plastic waste will be tested as an adhesive for the manufacture of composite boards. The composite board is made by preparing the raw material with the drying of the sugarcane residue and the dissolving of the plastic waste using xylene solvent. Furthermore, the mixing process is carried out with various coupling agents by 2, 4, 6, 8, and 10%, as well as the hot press temperatures by 160, 180, and 200°C. The results showed that the optimum value of the hot press temperature of the composite board was 160°C with 10% coupling agent concentration. The value of the thickness expansion was in the range of 0.0021–0.0153%, the water absorption was 0.067–0.640%, and the average density was 449.80 kg/m3. Its MOE was 92.188–459.901 Mpa, the MOR was in the range of 1.92–3.07 Mpa, and the DSC analyses were 5.3 and 23.52 KJ/g at 2% and 10% MAH concentrations, respectively. The physical and mechanical tests of the composite board obtained have fulfilled the standard of SNI 03-2105-1996 with the exception for MOR.
Characterizing mode choice behaviors of the evacuees during emergency evacuation using a Logistic regression model
Authors: Sugiarto S , Lulusi  , Isya M , Taufik  , Haiqal M 
Published: July 2019

AbstractThe most crucial transportation components in studying individual decision-making behavior are mode choice that used by evacuees. Especially in typical emerging countries which private motorized transport is mostly used in daily activities. Mode choice evacuation behavior is viewed as one of the essential aspects in a transportation disaster planning. This study is aiming to investigate an individual’s preferences for selecting motorized and non-motorized modes for their evacuation during imaginary tsunami evacuation. The Stated Preference (SP) experimental data were collected in Kuta Raja sub-district, one of the most exposed sub-district in Banda Aceh. Binary logistic regression was conducted to evaluate the effects of several factors quantitatively and to identify the dominant factor that affected evacuation mode choice. The empirical result depicts that mode choice used by evacuee during an emergency evacuation is suggestively associated to the socio-demographic attributes such as male gender, age, government employee, low-income household, household member and motorcycle owned. It found that the medium-income households substantially rely on motorcycle mode for their evacuation. The more motorcycle owned within the household, the more likelihood of using motorcycle for their evacuation. The male gender and government employee also has a statistically positive correlation to the explanatory power of motorized transport used to evacuate.
Spatial extension as a housing strategy in Kampung Kota: A case study from Kampung Kingkit, central Jakarta
Authors: Kurniasari P , Gabe R T , Adianto J 
Published: July 2019

Abstract
The massive flood of urbanization implicates the shortage of affordable housing for low-income people in the big cities, especially in Jakarta. To live and survive in Jakarta, the kampung kota becomes the housing solution rather than problems, due to its ability in providing low-cost housing. While it solves the affordability and the proximity to job location issues, this type of settlement is responsible for several wicked problems to its dwellers, such as space scarcity. Additionally, it creates inevitable health and social problems. In order to overcome these ever-growing problems, the dwellers develop an adaptable social system, which takes form as a spatial extension in the alley for domestic and social activities. This paper takes Gang Kingkit (Central Jakarta) as one of the high-density kampung kota settlements to examine the type of spatial extension and how dwellers produce it. Through in-depth interview and direct observation, we discover that there is a social system which allows several types of spatial extension to emerge simultaneously or reciprocally in public space. The social systems are embedded and manifested in the distinctive spatial system, which effectively minimizes the problems of living in kampung kota.
Defensible space in urban housing in Indonesia
Authors: Muhyi M M , Gabe R T , Adianto J 
Published: July 2019

Abstract
Security in the housing is considered as one of the most important things in the fulfillment of occupant’s needs. However, there are still many cases of criminality that still occur in urban housing. Defensible space is a concept of residential environment design that is able to prevent crime. Through literature study methods, field observations, and interviews, this paper discusses how defensible space is created in urban housing in Indonesia as well as its effect on the quality of security created between two different types of organic dwellings in Bogor City. The explanation starts from the identification of physical characteristics that create territoriality, natural surveillance, image, and milieu. Then, the social and physical condition are associated with their effects on people’s behaviors. The result of our discovery is that physical and social conditions create the whole defensible space condition. In the middle-class urban housing, the environment condition still opens the opportunity for the criminals to commit the crime because the defensible space is not created as a whole. Contrarily, this is created in the lower-class urban housing as a whole. Therefore, the environment condition is free from any crime.
Influence of material application to wayfinding issue in underground station design
Authors: Fatinah A A , Kusuma N R , Arvanda E 
Published: July 2019

Abstract
Getting lost and disoriented due to the lack of legibility of the space are common problems found in underground stations. Wayfinding inside underground stations is often thought as being solely supported by the presence of signage and directory maps as the tools that help users to understand their orientation and route better. However, the influence of materials on wayfinding in underground stations is often overlooked. Hence this paper presents a comprehensive examination of literature studies and an analysis on Dhoby Ghaut Station in Singapore as case studies. This station serves three interchange MRT lines and complex routes, which renders wayfinding issues even more urgent. The goal of this paper is to examine the potential of contrasting the material application for effective wayfinding inside the underground station. To identify aspects regarding the impact of selection and placement of materials applied (on floors, walls, and ceilings of underground stations), literature and case study are carried out. The results indicate that the materials used in underground station influences wayfinding in varying degrees.