bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analisis kinerja keuangan menggunakan metode economic value added (eva) dan market value added (mva) pada pt. Telekomunikasi indonesia (persero) tbk dan pt. Indosat tbk periode 2013-2017
Authors: Crysdayanti Mella Eka 
Published: February 2019

Penelitian ini menganalisis kinerja keuangan dengan menggunakan metode Economic Value Added (EVA) dan Market Value Added (MVA), dan juga merupakan studi kasus yang menggunakan laporan keuangan perusahaan dalam perhitungannya. Penelitian ini bertujuan untuk mengukur dan membandingkan kinerja keuangan PT. Telekomunikasi Indonesia, Tbk, dan PT. Indosat, Tbk pada periode tahun 2013-2017 dengan menggunakan metode EVA dan MVA. Dari hasil penelitian menggunakan metode EVA dan MVA, hasil yang didapat bahwa PT. Telekomunikasi Indonesia, Tbk merupakan perusahaan yang mampu memberikan nilai EVA yang positif (EVA>0) selama lima tahun berturut-turut dan memberikan nilai pasar saham yang positif ditunjukkan dengan nilai MVA yang positif (MVA>0) pada 2013-2017. Diikuti dengan PT. Indosat, Tbk yang hanya mampu memberikan nilai EVA positif (EVA>0) pada tahun 2016-2017 saja dan memberikan nilai tambah pasar positif (MVA>0) pertahunnya dari periode tahun 2013-2017.
BAG2 overexpression correlates with growth and poor prognosis of esophageal squamous cell carcinoma
Authors: Hong Ying-Cai , Wang Zheng , Peng Bin , Xia Li-Gang , Lin Lie-Wen , Xu Zheng-Lei 
Published: February 2019

AbstractPrevious studies have suggested that Bcl2-associated athanogene 2 (BAG2) serves as a crucial regulator for tumorigenesis in multiple tumors. However, little is known about the effect of BAG2 on esophageal squamous cell carcinoma (ESCC). This study focused on investigating whether BAG2 functions as a cancer-promoting gene in ESCC. In this work, gene expression data and clinical information from the NCBI Gene Expression Omnibus (GEO), Oncomine and The Cancer Genome Atlas (TCGA) were collected and analyzed. Expression of BAG2 in ESCC was determined using quantitative reverse transcription polymerase chain reaction (qRT-PCR). BAG2 was knocked down using small interference RNA (si-RNA) approach. Cell proliferation, migration and invasion were assessed by Cell Counting Kit-8 (CCK-8) and transwell assays. Molecular mechanism was detected by western blotting assay. The expression of BAG2 both in ESCC tissues and cells was upregulated and overexpression was associated with worsened prognosis. BAG2 silencing inhibited ESCC cell proliferation, migration and invasion, which was regulated by the phosphatidylinositol-3-kinase (PI3K)/ protein kinase B (AKT) signaling pathway. These results reveal contributions of BAG2 as a predictor and potential therapeutic target in ESCC.
Photonic crystal fiber metalens
Authors: Yang Jingyi , Ghimire Indra , Wu Pin Chieh , Gurung Sudip , Arndt Catherine , Tsai Din Ping , Lee Ho Wai Howard 
Published: February 2019

Abstract
Conventional optical fiber has excellent performance in guiding light, which has been widely employed for long-distance optical communication. Although the optical fiber is efficient for transmitting light, its functionality is limited by the dielectric properties of the core’s and cladding’s materials (e.g. Ge-doped-silica and silica glasses). The spot size of the transmitted light is diverging and restricted by the diffraction limit of the dielectric core, and the numerical aperture is determined by the refractive index of the fiber materials. However, the novel technology of metasurfaces is opening the door to a variety of optical fiber innovations. Here, we report an ultrathin optical metalens directly patterned on the facet of a photonic crystal optical fiber that enables light focusing in the telecommunication regime. In-fiber metalenses with focal lengths of 28 μm and 40 μm at a wavelength of 1550 nm are demonstrated with maximum enhanced optical intensity as large as 234%. The ultrathin optical fiber metalens may find novel applications in optical imaging, sensing, and fiber laser designs.
Crystal structure of N-((3R,10S,13S,17S)-17-((S)-1-(dimethylamino)ethyl)-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-3-yl)-N-methylbenzamide, C31H48N2O
Authors: Tan Bo , Wu Qi-Yun , Wu Ji-Chun , Huo Shao-Jie , He Xi-Cheng , Du Jiang 
Published: February 2019

Abstract
C31H48N2O, orthorhombic, P212121 (no. 19), a = 6.530(2) Å, b = 11.728(4) Å, c = 35.236(12) Å, V = 2698.6(15) Å3, Z = 4, R
gt(F) = 0.0492, wR
ref(F
2) = 0.1034, T = 173 K.
Crystal structure of catena-poly[dibromido-{μ2-1,5-dimethyl-2-phenyl-4-((pyridin-4-ylmethylene)amino)-1,2-dihydro-3H-pyrazol-3-one-κ2
N:O}zinc(II)], C34H32Br4N8O2Zn2
Authors: Pang Haixia 
Published: February 2019

Abstract
C34H32Br4N8O2Zn2, triclinic, P1̄ (no. 2), a = 11.441(2) Å, b = 13.422(2) Å, c = 14.370(3) Å, α = 101.129(3)°, β = 99.587(2)°, γ = 114.972(3)°, V = 1885.0(6) Å3, Z = 2, R
gt(F) = 0.0510, wR
ref(F
2) = 0.1775, T = 298(2) K.
Crystal structure of diaqua-dichlorido-bis(μ2-2-(((1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)imino)methyl)phenolato-κ4
O:O,N,O′)dicobalt(II), C36H36Cl2N6O6Co2
Authors: Pang Haixia , He Xiong , Feng Xiang , Yuan Ximing 
Published: February 2019

Abstract
C36H36Cl2N6O6Co2, triclinic, P1̄ (no. 2), a = 7.4399(9) Å, b = 9.5362(11) Å, c = 13.1754(15) Å, α = 73.589(2)°, β = 84.396(2)°, γ = 74.709(2)°, V = 864.68(17) Å3, Z = 1, R
gt(F) = 0.0306, wR
ref(F
2) = 0.1068, T = 298(2) K.
Crystal structure of methyl 2-(4-(3-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrimidin-6-yl)phenyl)acetate, C19H17N5O2
Authors: Fang Bo , Meng Jiang Ping , Gan Lin Ling 
Published: February 2019

Abstract
C19H17N5O2, monoclinic, C2/c (no. 15), a = 14.734(6) Å, b = 13.565(5) Å, c = 33.385(12) Å, β = 91.311(9)°, V = 6671(4) Å3, Z = 16, R
gt(F) = 0.0638, wR
ref(F
2) = 0.1783, T = 293(2) K.
Metal-support interactions in the design of heterogeneous catalysts for redox processes
Authors: Lokteva Ekaterina S. , Golubina Elena V. 
Published: February 2019

Abstract
The effect of the metal-support interaction (MSI) has been discussed for several types of catalytic systems comprising metal nanoparticles (Ni, Pd, Au, Fe) on oxide and carbon supports, showing promising catalytic properties in hydrogenation of unsaturated C–C bonds, hydrodechlorination (HDC) of chlorinated organic molecules and CO total oxidation. The MSI of a different strength, from the redistribution of the electron density of nanoparticles (NPs) to the chemical interactions, is determined by the composition of the support and the active site, the method of active metal deposition, calcination temperature, particle size etc. The types of MSI considered in this review include: (1) the interaction of the active metal (Me) NPs with alumina and modified zirconia to form several oxidation states of Me in the composition of surface or bulk chemical compounds with a support; (2) the influence of oxide (alumina, silica) or carbon (highly oriented pyrolytic graphite, Sibunit) supports on the formation of active sites in the catalysts with ultra-low Me loading prepared by deposition of pre-formed metal NPs produced by laser electrodispersion (LED) or as colloidal dispersion; (3) the anchoring of Me NPs on the surface of carbon supports (nanodiamonds and carbon nanotubes) directly with a support surface, e.g. through surface defects, or through surface functional groups; (4) ‘reverse’ MSI in the Me@C composites, consisting of metal NPs, covered with the defected graphene layers or immersed into carbon matrix. It is demonstrated on the example of LED systems, that oxidation of metal under MSI is less significant in carbon-supported systems than in oxide-supported ones, but charge effects can play a noticeable role for both types of supports. Different ways of MSI tuning provide the possibilities to achieve the optimal Men+/Me0 ratio in the catalysts for HDC of mono- and polychlorinated organic molecules, including persistent organic pollutants. One of these ways is tuning the composition of functional groups on the surface of nanodiamonds and carbon nanotubes by additional treatments to achieve the desirable metal anchoring, the optimal metal NPs size and the improved catalytic properties. Unusual type of MSI is represented by the activation of thin graphene shell of Me@C composites by the presence of defects in the shell and a transition metal (Ni, Fe) in subsurface layer. This effect allows H2 activation that is a significant step in many industrially important reactions. The selectivity and activity of such systems can be intentionally changed by varying the nature of metal and reaction temperature. Significant attention has been given in the review to the novel catalytic systems described in the previous works of the authors.
Green chemical engineering in China
Authors: Zhang Xiangping , Liu Changjun , Ren Qilong , Qiu Xueqing , Xu Baohua , Zhou Xintong , Xie Yuanbang , Lou Hongming , Ali Mohammad Chand , Gao Hongshuai , Bai Yinge , Zhang Suojiang 
Published: February 2019

AbstractIn China, the rapid development greatly promotes the national economic power and living standard but also inevitably brings a series of environmental problems. In order to resolve these problems fundamentally, Chinese scientists have been undertaking research in the area of green chemical engineering (GCE) for many years and achieved great progresses. In this paper, we reviewed the research progresses related to GCE in China and screened four typical topics related to the Chinese resources characteristics and environmental requirements, i.e. ionic liquids and their applications, biomass utilization and bio-based materials/products, green solvent-mediated extraction technologies, and cold plasmas for coal conversion. Afterwards, the perspectives and development tendencies of GCE were proposed, and the challenges which will be faced while developing available industrial technologies in China were mentioned.
National External Quality Assessment follow-up: 2010–2017 Turkish experience
Authors: Mercan Ferzane , Serdar Muhittin A. , Senes Mehmet , Konukoglu Dildar , İnal Tamer Cevat , Alatas Özkan , Pinar Asli , Savci Özlem , Güven Muhammet , Gündüz Mehmet , Eğin Ertuğrul , Tipioğlu Yasal Önder , Tekin Ahmet , Yucel Doğan 
Published: February 2019

Abstract

Objective
Medical laboratories encounter critical obstacles in External Quality Assessment (EQA) practices that are key to assessment of the analytical period. Present study aims to unveil the challenges in nationwide inter-laboratory harmonization and suggest practical solutions.

Materials and methods
EQA results of 1941 laboratories participating in 18 different EQA-programs between 2010 and 2017 were examined. Standard Deviation Index (SDI) of each program calculated using 801,028 sample data from 24 different clinical chemical tests were used to conduct a process assessment.

Results
There is a significant discrepancy in unsatisfactory performance ratio among different EAQ-programs with an average of 3.4% (27,074 cases) between 2010 and 2017 and a decreasing trend (~40–50%) in 7-years. Programs with higher SDI display lower discrepancy rates. Reasons for unaccepted results appear to be data entry errors (8.27–22.2%), material dilution errors (5–11.4%), technical problems (3.76–7.9%); while random or unidentified causes account for a major of 44.9–59.5%. In 7-years, 15.7% reduction was observed in average SDI of all tests.

Conclusion
With the launch of national EQA follow-up program, increased awareness of the analytical processes led to a decrease in unaccepted results and variances in the analytical period. Staff training is suggested as a significant measure. In addition, simultaneous assessment of SDI and allowable total error rates would reduce the variation between programs.
Defining the Phases of Boxing Punches: A Mixed-Method Approach
Authors: Lenetsky Seth , Brughelli Matt , Nates Roy J. , Neville J.G. , Cross Matt R. , Lormier Anna V. 
Published: February 2019

Abstract
Lenetsky, S, Brughelli, M, Nates, RJ, Neville, JG, Cross, MR, and Lormier, AV. Defining the phases of boxing punches: A mixed-method approach. J Strength Cond Res 34(4): 1040–1051, 2020—Current research on punching in boxing has explored both kinematic and kinetic variables; however, there is no shared structure in the literature to describe these findings. A common method used to provide a shared structure in other sporting tasks is the definition of movement phases. To define the phases of 4 punches used in boxing (lead punches and rear straight and hook punches), 10 experienced and competitive boxers (age = 25.6 ± 5.97 years, height = 179.5 ± 7.72 cm, body mass = 95.66 ± 21.82 kg, and years training = 10.3 ± 5.97 years) were tested while performing maximal-effort punches. Ground reaction forces (GRFs), electromyographic, high-speed video (HSV), and striking dynamometry data were collected during all punches. A mixed-method approach was used to define the phases for each punch type based on the GRF measurements and impact timing from the striking dynamometer. Electromyographic and HSV data were then used to develop a more holistic understanding of punching actions by elaborating on the description of each phase. The final outcome of this approach has produced definitions for the phases of straight and hook punches, a greater qualitative understanding of said punches, and most importantly, a structure for current and future punching-related research, and a context to improve coach/sport scientist communication.
Effects of Caffeine Chewing Gum on Exercise Tolerance and Neuromuscular Responses in Well-Trained Runners
Authors: Dittrich Naiandra , Serpa Marília C. , Lemos Elisa Cristina , De Lucas Ricardo D. , Guglielmo Luiz Guilherme A. 
Published: February 2019

Abstract
Dittrich, N, Serpa, MC, Lemos, EC, De Lucas, RD, and Guglielmo, LGA. Effects of caffeine chewing gum on exercise tolerance and neuromuscular responses in well-trained runners. J Strength Cond Res 35(6): 1671–1676, 2021—This study aimed to investigate the effects of caffeinated chewing gum on endurance exercise, neuromuscular properties, and rate of perceived exertion on exercise tolerance. Twelve trained male runners (31.3 ± 6.4 years; 70.5 ± 6.6 kg; 175.2 ± 6.2 cm; 9.4 ± 2.7% body fat; and V̇o
2max = 62.0 ± 4.2 ml·kg−1·min−1) took part of the study. The athletes performed an intermittent treadmill test to determine maximal aerobic speed and delta 50% (Δ50%) intensity. In the following visits, they performed 2 randomized time to exhaustion tests (15.4 ± 0.7 km·h−1) after the ingestion of 300 mg of caffeine in a double-blind, crossover, randomized design. Maximal voluntary contraction of the knee extensor associated to surface electromyographic recording and the twitch interpolation technique were assessed before and immediately after the tests to quantify neuromuscular fatigue of the knee extensor muscles. Caffeine significantly improved exercise tolerance by 18% (p < 0.01). Neuromuscular responses decreased similarly after time to exhaustion in both exercise conditions; however, athletes were able to run a longer distance in the caffeine condition. The performance improvement induced by caffeine seems to have a neuromuscular contribution because athletes were able to run a longer distance with the same neuromuscular impairment.
Chronic Effects of Static and Dynamic Stretching on Hamstrings Eccentric Strength and Functional Performance: A Randomized Controlled Trial
Authors: Barbosa Germanna M. , Trajano Gabriel S. , Dantas Glauko A.F. , Silva Bianca R. , Vieira Wouber H. Brito 
Published: February 2019

Abstract
Barbosa, GM, Trajano, GS, Dantas, GAF, Silva, BR, and Vieira, WHB. Chronic effects of static and dynamic stretching on hamstrings eccentric strength and functional performance: A randomized controlled trial. J Strength Cond Res 34(7): 2031–2039, 2020—The purpose of this study was to investigate the effect of static or dynamic stretching training program on hamstrings eccentric peak torque and functional performance. Forty-five active healthy men were randomly allocated into 3 groups (n = 15 per group): no stretching (control), static stretching (3 sets of 30 seconds), and dynamic stretching (3 sets of 30 repetitions). Static and dynamic stretching protocols on the hamstring muscles were performed 3 times a week until complete 10 sessions. Isokinetic knee flexor eccentric peak torque (60°·s−1), triple hop distance, and modified 20-m sprint time were assessed in a random order before and after stretching training. A mixed-design analysis of variance was performed, with an alpha level of 0.05. There was a significant decrease of eccentric peak torque (p ≤ 0.0001, −15.4 ± 10.4%, within-group effect size: 1.03) after static stretching training. The static stretching training reduced eccentric torque when compared with no stretching (−7.6 ± 21.7%, between-group effect size: 0.50) and dynamic stretching (−7.8 ± 29.8%, between-group effect size: 0.51). Moreover, the reached distance on triple hop test was also reduced after static stretching protocol (p = 0.009, −3.7 ± 4.1%, within-group effect size: 0.29). These findings suggest that static stretching training is sufficient to produce meaningful reductions on hamstrings eccentric torque and functional performance. Based on the results of this study, caution should be taken when prescribing of static stretching training in isolation when the purpose is to improve performance, and indirectly, to prevent hamstring strain injuries due to its possible negative effects on hopping performance and knee flexor eccentric torque.
Activation Energy of Conduction for Use in Temperature Corrections on Electrical Measurements of Concrete
Authors: Coyle Alex T. , Spragg Robert P. , Suraneni Prannoy , Amirkhanian Armen N. , Tsui-Chang Marisol , Weiss William Jason 
Published: February 2019

Abstract
The formation factor obtained through electrical resistivity measurements is becoming a popular method to determine transport properties of concrete. Resistivity measurements are dependent on multiple factors, including degree of saturation, pore solution conductivity, and temperature. The Arrhenius equation is used to correct electrical resistivity for temperature effects using an activation energy of conduction (Ea-cond). This parameter has been measured on a wide variety of materials, including pore solutions, pastes, mortars, and concretes (with a variety of saturation states). The reported values of Ea-cond typically range from 9 to 39 kJ/mol. This article examines the factors affecting Ea-cond in order to select an appropriate temperature correction. In this study, Ea-cond was determined from data measured on various concrete mixtures used in transportation infrastructure applications as well as extracted and simulated pore solutions. The Ea-cond of pore solutions remains relatively constant (an average value of 13.9 ± 1.5 kJ/mol) for typical pore solutions and was slightly lower than the Ea-cond of saturated specimens (an average value of 15.8 kJ/mol). It was found that Ea-cond increases as the degree of saturation of the specimen is reduced. Drying increases the ionic concentration of the fluid in the pores; however, this does not explain the changes in Ea-cond. The effects of drying were determined to be primarily due to a change in the volume of the conductive fluid film in the concrete and in the connectivity of the fluid-filled pores. While it is better to directly measure the Ea-cond of a concrete mixture, this is not always feasible or practical. In such cases, for pore solutions, a value of 13.9 kJ/mol can be used, and for saturated concretes, a value of 15.8 kJ/mol can be used. For concretes with a varying degree of saturation, the Ea-cond can be estimated using the developed equation.
Microstructural Study of Steel-Concrete Interface and Its Influence on Bond Strength of Reinforced Concrete
Authors: Goudar Sharan Kumar , Das B. B. , Arya S. B. 
Published: February 2019

Abstract
In this investigation, the variations in steel-concrete interface (SCI) properties, such as porous zone thickness and calcium hydroxide content around the reinforcing steel, were studied with respect to curing time. Three kinds of commercially used cements, ordinary portland cement (OPC), portland pozzolana cement (PPC), and portland slag cement (PSC), were used, and their significance regarding SCI properties was investigated. A reliable thresholding grayscale-based technique was used to determine the porous zone thickness at the SCI. The properties of SCI were found to be quite influenced by the curing period. The PSC concrete showed significant reduction in mean porous zone thickness at SCI compared with OPC and PPC concrete after 90 days of curing. The reduction in mean porous zone thickness can be considered one of the many influencing factors that resulted in increased ultimate bond strength at 90 days of curing. Also, the variation in calcium hydroxide content from the SCI toward the bulk concrete was examined with a scanning electron microscope empowered with energy-dispersive spectroscopy. The findings indicate a gradual decrease in calcium hydroxide content away from the steel surface toward the bulk concrete. The prolonged curing resulted in a slightly higher reduction of calcium hydroxide content around the SCI for PPC and PSC concrete because of the pozzolanic reactions. Higher reduction of calcium hydroxide content around the SCI for PPC and PSC concrete is predicted to be the reason for improved ultimate bond strength after prolonged curing.
Interlaboratory Study to Determine Precision for Defect Detection and Rating of Plastic Film Using Optical Sensors According to ASTM D7310
Authors: Colegrove Brenda , McAlpin Casey , Garner Richard , Mayo Peter 
Published: February 2019

Abstract
Recently, the five-year review for ASTM D7310, Standard Guide for Detection and Rating of Plastic Films Using Optical Sensors, was carried out. One of the key goals for this review was refining the document such that it may eventually be transitioned to a full-fledged test method. However, before such a goal could be realized, it was necessary to determine the practical limitations of the technique relative to the expected precision, repeatability, and reproducibility. To that end, interlaboratory studies were carried out in two stages. Stage one served as a pilot study and the participating laboratories were given limited guidance. This allowed identification of key control variables that would need to be defined in subsequent broader studies and ultimately in the future method. In stage two, the key variables identified in stage one were controlled and the precision of the technique was elucidated for three material types: polypropylene, high-density polyethylene, and low-density polyethylene. The results from these studies are discussed herein.