bluuebunny/crossref_metadata_2025_split huggingface dataset:
Performance Evaluation of Existing Special Bridges in Indonesia Based on SNI 1725:2016 AND SNI 2833:2016 (Case Study of Dr. Ir. Soekarno Bridge)
Authors: Sinatra Frans , Riyansyah Muhammad , Suarjana Made 
Published: May 2020

AbtractExisting special bridges such as cable-stayed bridges which are complex in structure need to be evaluated against SNI 1725:2016 and SNI 2833:2016. Dr. Ir. Soekarno Bridge located in Manado, North Sulawesi, was used as case study. Analysis based on the performance of the bridge was conducted using the Nonlinear Static Pushover Analysis (NSPA) with three different load distributions and Nonlinear Time History Analysis (NLTHA). Due to the standard load of the bridge, the deflection was still below the allowable deflection. Girder has an overstress of 12% in the Service Ic combination. The cable also has overstress in Cable 7 between 0.4% and 6.2%. Lower segment pylon capacity was exceeded by earthquake load combination of 28%. Bridge performance shows that the bridge structure was at fully operational performance level and the element performance was at immediate occupancy level, each method shows different result in base shear and displacement. The result shows that re-evaluation for existing special bridges is required. The bridge performance has different base shear and displacement for each method. Nonlinear Time History Analysis is the better option for special bridge, Nonlinear Static Pushover Analysis method requires a further study to determine the ideal load distribution for special bridge because the load distribution is crucial to determine the result of pushover analysis. AbstrakJembatan khusus eksisting seperti jembatan cable stayed yang sangat kompleks perlu dievaluasi kinerjanya terhadap SNI 1725:2016 dan SNI 2833:2016. Studi kasus pada penelitian ini adalah Jembatan DR. Ir. Soekarno di Kota Manado, Sulawesi Utara. Dilakukan pula analisis berdasarkan kinerja dengan Nonlinear Static Pushover Analysis dengan tiga pola beban dan Nonlinear Time History Analysis. Akibat beban standar jembatan, lendutan yang terjadi masih dibawah lendutan ijin. Girder mengalami kelebihan tegangan sebesar 12% pada kombinasi beban Layan Ic. Kabel juga terjadi kelebihan tegangan pada Kabel 7 antara 0,4% sampai 6,2%. Kapasitas pylon segmen bawah terlampaui oleh kombinasi beban gempa sebesar 28%. Analisis kinerja struktur jembatan dengan dua metode didapatkan bahwa tingkat kinerja struktur adalah fully operational dan kinerja elemen adalah immediate occupancy, akan tetapi nilai base shear dan perpindahan berbeda untuk masing-masing metode. Hasil analisis menunjukkan bahwa jembatan khusus eksisting perlu di evaluasi ulang terhadap peraturan terbaru. Kinerja jembatan dengan dua analisis nonlinier yang dilakukan menunjukkan hasil yang berbeda, Nonlinear Time History Analysis tetap menjadi metode yang lebih baik untuk jembatan khusus sedangkan metode Nonlinier Static Pushover Analysis perlu penelitian lanjutan untuk menentukan distribusi beban pushover yang cocok digunakan untuk jembatan cable stayed, mengingat pola distribusi beban sangat menentukan hasil dari analisis pushover.
Pengaruh Penggunaan Gradasi Agregat Berbasis SNI 03-2834-2000 dalam Campuran Beton terhadap Kuat Tekan dan Fracture Toughness Beton
Authors: Siregar Atur Parhorasan Nusantara , Idha Nurul , Suarnita I Wayan 
Published: May 2020

AbstrakStandar Nasional Indonesia (SNI) nomor 03-2834-2000 (SNI 03-2834-2000) memberikan empat jenis slope gradasi gabungan agregat kasar dan halus dalam pembuatan beton normal. Investigasi empat jenis slope gradasi agregat gabungan ini akan dilakukan untuk mengetahui pengaruhnya terhadap kuat tekan dan fracture toughness dari beton. Material dasar penyusun beton yang berasal dari Sungai Palu dan memenuhi kriteria standar SNl yang dipakai dalam membuat benda uji. Uji kuat tekan beton digunakan kubus berdimensi 150x150x150 mm dalam menentukan nilai kuat tekan beton (fc'), dan empat jenis balok berdimensi tebal, tinggi dan panjang: 50 x 100 x 300 mm, 50 x 150 x 450 mm, 50 x 300 x 900 mm, dan 50 x 400 x 1200 mm untuk uji Three-Point Bend (TPB) dalam menentukan fracture toughness beton (KIC). Hasil investigasi ini menunjukan bahwa gradasi agregat gabungan yang dipakai dalam campuran beton akan berpengaruh tidak signifikan pada nilai fc', akan tetapi berpengaruh signifikan pada nilai KIC.AbstractIndonesian National Standard 03-2834-2000 (SNI 03-2834-2000) proposed four types of combined aggregate grading of coarse and fine aggregates in designing normal concrete strength. Investigation of four combined aggregate grading types was performed to determine its effect on the compressive strength and fracture toughness of the concrete.Basic material constituents of concrete were used from Palu river and fulfilling SNI criteria in manufacturing samples. Cubes of 150x150x150 mm were used to determine concrete compressive strength value (fc'), and four types of beams with dimension of width, height, and length: 50 x 100 x 300 mm, 50 x 150 x 450 mm, 50 x 300 x 900 mm, dan 50 x 400 x 1200 mm for Three-Point Bend (TPB) test method to determine fracture toughness of the concrete (KIC). Current research results were found that combined aggregate grading types influenced insignificantly on the fc' value, but significantly on the KIC value.
INFLUENCE OF MANGANESE ON FORMATION OF ACTIVE PHASE OF COBALT CATALYST OF HYDROCARBON SYNTHESIS
Authors: Sulima Sergey I. , Saliev Alexey N. , Chistyakova Natalya S. , Savost’yanov Alexander P. , Bakun Vera G. , Shabelskaya Nina P. 
Published: May 2020

The active phase and catalytic properties of cobalt catalysts of Fischer-Tropsch synthesis promoted with manganese and prepared by impregnation were studied. KSKG silica gel having a monodisperse structure with an average pore diameter of 12–16 nm was used as a support. The cobalt content in the obtained samples was 20.8-21.8 wt.%, manganese content was 0.5–2 wt.%. The structural characteristics of the catalysts were investigated by X-ray diffraction, transmission electron microscopy, temperature-programmed reduction and temperature-programmed hydrogen desorption. The catalytic activity and selectivity of the samples in the process of hydrocarbon synthesis were researched in the flow mode at a pressure of 0.1 MPa, at a Gas Hourly Space Velocity (GHSV) of 100 h–1, at the temperatures of 150–220 °C and a ratio of CO to hydrogen in synthesis gas of 2:1. Preliminary reduction of catalysts was carried out with hydrogen at a temperature of 400 °C. In the composition of the studied samples with manganese the formation of solid solutions of metals such as xCo3O4–(1–x)Mn3O4 was confirmed. It is shown that the reduction process of Co3O4 is determined by the composition and structure of solid solutions of components that are hard-to-recover compounds. The features of the promoting action of manganese depending on the concentration are determined. The introduction of 0.5–2 wt.% manganese allows to regulate the composition and microstructure of cobalt oxide compounds, the properties of metallic Co, increases the catalytic characteristics: activity, selectivity for C5+ and reduces the yield of methane. It is shown how, depending on the content of the metal additive, the manifestations of the structural (at a concentration of 0–1 wt.%) or electronic (at a concentration of 2 wt.%) promoting action of manganese increase. The optimum concentration of manganese is 1 wt.%. The catalyst is characterized by the minimum average size of crystallites, the highest value of the specific surface of cobalt metal and the maximum catalytic indicators.
HETEROCYCLIZATION OF 3-PROPARGYLSULFANYL-5 PHENYL-1,2,4-TRIAZINE: TANDEM REACTIONS WITH BROMINE LEADING TO NEW DERIVATIVES OF 7 PHENYL[1,3]THIAZOLO[3,2-B][1,2,4]TRIAZINIUM
Authors: Rybakova Anastasiya V. , Kim Dmitry G. , Danilina Elena I. , Sazhaeva Olesya V. , Ezhikova Marina A. , Kodess Mikhail I. 
Published: May 2020

Derivatives of 1,2,4-triazine-3-thione exhibit biological activity in a wide range. They have optoelectronic properties and can be used as synthons in synthesis of various pyridines by the Diels-Alder reaction. 1,2,4-Triazines are of the greatest interest, for organic synthesis in particular. In the present study we have established that the interaction of 3-propargylsulfanyl-5-phenyl-1,2,4-triazine, obtained by alkylation of 5-phenyl-2,3-dihydro-1,2,4-triazine-3-thione with 3-bromopropyne in acetone in the presence of triethylamine, with halogens leads to annelation of thiazole cycle. At that, [1,3]thiazolo[3,2-b][1,2,4]triazinium systems contain either endo- or exocyclic double bond in their structure, depending on the halogen type. By way of example, iodine acting on propargyl sulfide forms a dark precipitate of (3Z)-3-iodomethylene-7-phenyl-2,3-dihydro-[1,3]thiazolo[3,2-b][1,2,4]triazinium triiodide, the structure of which has been confirmed by 1H and 13C NMR spectroscopy, including two-dimensional 2D 1H-13C HSQC, HMBC and 1H-1H NOESY experiments. Treatment of the obtained triiodide by sodium iodide in acetone leads to synthesis of the corresponding monoiodide, which precipitates from the reaction mixture as a dark red precipitate. Reaction with bromine, as distinct from heterocyclization under iodine action, comprises an unusual cascade reaction including the stages of electrophile heterocyclization, bromine addition, and hydrogen bromide elimination, which leads to formation of 3-dibromomethyl-7-phenyl[1,3]thiazolo[3,2-b][1,2,4]triazinium bromide. It should be pointed out that the identifying feature of 3-propargylsulfanyl-5-phenyl-1,2,4-triazine heterocyclization under iodine and bromine action is the signal bias of the aromatic proton in a triazine ring towards weak field in the 1H NMR spectrum of the reaction products. This is presumably associated with formation of the positively charged nitrogen atom.
Partnering With Patients to Reduce Firearm-Related Death and Injury
Authors: Ozuna Luis , Champion Carisa , Yorkgitis Brian K. 
Published: May 2020

Abstract
In the United States, nearly 40,000 deaths per year are firearm related. Among these fatalities are approximately 1300 children. In addition, there are more than 20,000 unintentional firearm injuries per year. Osteopathic physicians have a unique opportunity to affect this public health concern through patient education. Several evidenced-based recommendations can be incorporated at the bedside to reduce firearm injuries and deaths, including gun education, safe storage, and proper disposal.
Integrating Osteopathic Manipulative Treatment and Injections in the Diagnosis and Management of a Hip Labral Tear
Authors: Snyder Laura L. , Knox Shaun C. , Smutny Charles J. 
Published: May 2020

Abstract
Hip pain in adults is a common complaint. Secondary processes can often mask underlying conditions, prolonging the course to diagnosis and definitive treatment. In this case, a 74-year-old man presented to an outpatient clinic after 6 weeks of right hip pain that began upon initiation of a rehabilitation program following coronary artery bypass graft surgery. Various imaging and treatment modalities (including radiography, osteopathic manipulative treatment, injection of the greater trochanteric bursa, L2-3 paravertebral block, magnetic resonance imaging, and intra-articular hip injection with 1% lidocaine) ultimately led to the definitive diagnosis of a labral tear. This case report highlights how a comprehensive osteopathic approach was used to evaluate and treat a patient with persistent unilateral hip pain because of an acetabular labral tear, associated psoas syndrome, and trochanteric bursitis, all within 2 months and with a positive clinical outcome.
Hamstring extensibility differences among elite adolescent and young dancers of different dance styles and non-dancers
Authors: Vaquero-Cristóbal Raquel , Molina-Castillo Patricia , López-Miñarro Pedro A. , Albaladejo-Saura Mario , Esparza-Ros Francisco 
Published: May 2020

BackgroundHamstrings have been analyzed extensively due to their tendency to shorten and their effect in the lumbo-pelvic dynamics and the sagittal position of the spine in trunk flexion with extended knees positions. It has been demonstrated that practicing a certain sport results in long-term changes in hamstring extensibility. Despite this, adequate extensibility of the hamstring musculature is essential for the dancer’s performance. Several studies have found differences in the extensibility of the hamstrings depending on the dance style, but none have compared ballet, Spanish dance and modern dance. The purpose of the present research was to analyze the differences in hamstring extensibility among professional dance students based on dance style practiced and non-dancers.MethodsThe sample was comprised of 210 students from the Professional Dance Conservatory (70 for ballet, 70 for Spanish dance and 70 for modern dance) and 70 non-dancers. For the assessment of hamstring extensibility, the angle in the passive and active straight leg raise (PSLR and ASLR, respectively) test, and the scores of the pelvic tilt in sit-and-reach (SR) test and the toe-touch (TT) test were randomly conducted.ResultsThe results showed significant differences for all the tests according to group (p< 0.001). In the PSLR and ASLR test, for both legs, and in the pelvic tilt in the SR test, the ballet dancers showed greater ranges of hamstring extensibility than the modern dancers and Spanish dancers (p≤ 0.001). In the distance in the SR test and in the pelvic tilt in the TT test, the ballet dancers obtained higher values than the Spanish dancers (p= 0.004 andp= 0.003, respectively). The modern dancers showed higher ranges of hip flexion than the Spanish dancers in the ASLR test for both legs and in the pelvic tilt in the SR test (pfrom 0.007 to <0.001). Dancers showed significantly higher hamstring extensibility than non-dancers in all the tests (p< 0.001).ConclusionsThe systematic practice of dance, regardless of the style, seems to lead to high ranges of hamstring extensibility. Ballet dancers have the greatest hamstring extensibility.
An examination of the Self‐Administered Interview as a verbal veracity assessment tool
Authors: Hudson Charlotte A. , Vrij Aldert , Akehurst Lucy , Hope Lorraine 
Published: May 2020

SummaryThe self‐administered interview (SAI) is a written eyewitness recall tool that elicits more information from cooperative witnesses than written free recall (WFR) formats. To date, SAI research has examined the accounts of cooperative people providing honest reports. In the current experiment, truthful and fabricating participants (N = 128) either completed a WFR or a SAI after witnessing a crime (initial account). After a 1‐week delay, participants were interviewed verbally (subsequent interview). Truth tellers reported significantly more detail than liars in both the initial account and subsequent interview, and participants who completed the SAI reported more detail than those completing the WFR. Truth tellers repeated and omitted more information in the subsequent interview than liars; however, there was no significant difference in the number of reminiscent details reported. Although the SAI is effective in eliciting information as an initial eyewitness reporting tool, no benefits for the detection of deception were demonstrated.
Donor and Acceptor Fused 16,16‐Dimethyl‐11,16‐dihydrodibenzo[2,3:5,6]pyrrolizino[1,7‐ab]acridine as a Blue‐Emitting Chromophore for High External Quantum Efficiency and Long Lifetime
Authors: Patil Vilas Venunath , Lee Kyung Hyung , Lee Jun Yeob 
Published: May 2020

AbstractThe rigid molecular assembly formed by the fusion of the donor type acridine and acceptor type indolo[3,2,1‐jk]carbazole, namely 16,16‐dimethyl‐11,16‐dihydrodibenzo[2,3:5,6]pyrrolizino[1,7‐ab]acridine (ACDID), is developed as a new chromophore to give narrow emission in the blue region. The functionalization of the chromophore with phenyl and triphenylamine gives two fluorescence emitters, ACDID‐Ph and ACDID‐TPA, respectively. The in‐depth study of the emitters has confirmed that the triphenylamine unit in the ACDID‐TPA emitter enhances the external quantum efficiency (EQE) along with device stability. The ACDID‐TPA emitter shows high EQE of 6.3% and small full width at half maximum of 39 nm by the rigidity of the chromophore. The ACDID‐derived blue emitter performs better than the conventional pyrene‐derived emitter in terms of device lifetime, demonstrating the potential of the donor‐ and acceptor‐fused ACDID as the chromophore of blue emitters.
Bright Green Emitting CaYAlO4:Tb3+,Ce3+ Phosphor: Energy Transfer and 3D‐Printing Artwork
Authors: Zhou Lei , Hong Junyu , Li Xiaohui , Shi Jianxin , Tanner Peter A. , Wong Ka‐Leung , Wu Mingmei 
Published: May 2020

AbstractThe environmentally friendly and low‐priced CaYAlO4:Tb3+ nanophosphors are combined with good optically transparent materials for the application in 3D printing. For ultraviolet (UV) light‐emitting diode excitation, CaYAlO4:Tb0.07Cey and CaYAlO4:Ce0.05Tbx nanophosphors are prepared by a sol–gel route and systematically studied for optimal excitation at 380 nm to give strong green emission to which human and aquatic animals eyes are generally sensitive. This is benefited from the dipole and spin allowed transition of Ce3+ and the 92.5% efficient energy transfer from Ce3+ to Tb3+ in this host. Polydimethylsiloxane, with 92% transmittance in the visible spectral region, is a valid choice to make the shaped artwork by a templating method, combined with the nanoparticles to give a uniform distribution, as determined by X‐ray microcomputed tomography. Polylactic acid is also employed to create a frog artwork by the fused deposition modeling method. The final 3D‐printed colorful artwork is displayed herein together with that produced by the templating method under different light source excitation to suggest a novel expression of aesthetic concepts and a potential application in the future marine environment such as a lamp to attract aquatic animals or a buoy to guide ships.
Refractory Ultrathin Nanocomposite Solar Absorber with Superior Spectral Selectivity and Thermal Stability
Authors: Raza Aikifa , Alketbi Afra S. , Devarapalli Rajakumar , Li Hongxia , Zhang TieJun 
Published: May 2020

AbstractHighly efficient solar–thermal energy conversion requires refractory absorbers harnessing full spectrum of sunlight, minimal thermal emission, and structural stability at higher operating temperatures. Herein, an ultrathin ultrabroadband omnidirectional silicon carbide–tungsten (SiC‐W) refractory nanocomposite is fabricated by high‐throughput co‐sputtering with superior thermal and oxidation stability. The as‐fabricated SiC‐W nanocomposite (78 nm) deposited on tungsten layer with top anti‐reflective film exhibits high solar absorptance of 95.45% in the wide range of 250–2500 nm with thermal emittance below 0.05 at ambient temperature. The ultrabroadband absorption is achieved by plasmonic resonances triggered by self‐formed tungsten nanoclusters in the range of 500–1500 nm combined with SiC intrinsic absorption below λ < 500 nm. SiC as diffusion barrier also prevents interlayer diffusion and oxidation of tungsten nanoclusters to achieve superior thermal/oxidation stability, when annealed at 900 K (air) and 1050 K (vacuum). This work demonstrates outstanding capability of refractory nanocomposites in high‐performance solar thermal technologies for both terrestrial and space environments.
Distinguishing Optical and Acoustic Phonon Temperatures and Their Energy Coupling Factor under Photon Excitation in nm 2D Materials
Authors: Wang Ridong , Zobeiri Hamidreza , Xie Yangsu , Wang Xinwei , Zhang Xing , Yue Yanan 
Published: May 2020

AbstractUnder photon excitation, 2D materials experience cascading energy transfer from electrons to optical phonons (OPs) and acoustic phonons (APs). Despite few modeling works, it remains a long‐history open problem to distinguish the OP and AP temperatures, not to mention characterizing their energy coupling factor (G). Here, the temperatures of longitudinal/transverse optical (LO/TO) phonons, flexural optical (ZO) phonons, and APs are distinguished by constructing steady and nanosecond (ns) interphonon branch energy transport states and simultaneously probing them using nanosecond energy transport state‐resolved Raman spectroscopy. ΔTOP −AP is measured to take more than 30% of the Raman‐probed temperature rise. A breakthrough is made on measuring the intrinsic in‐plane thermal conductivity of suspended nm MoS2 and MoSe2 by completely excluding the interphonon cascading energy transfer effect, rewriting the Raman‐based thermal conductivity measurement of 2D materials. GOP↔AP for MoS2, MoSe2, and graphene paper (GP) are characterized. For MoS2 and MoSe2, GOP↔AP is in the order of 1015 and 1014 W m−3 K−1 and GZO↔AP is much smaller than GLO/TO↔AP. Under ns laser excitation, GOP↔AP is significantly increased, probably due to the reduced phonon scattering time by the significantly increased hot carrier population. For GP, GLO/TO↔AP is 0.549 × 1016 W m−3 K−1, agreeing well with the value of 0.41 × 1016 W m−3 K−1 by first‐principles modeling.
MLH1 Deficiency Induces Cetuximab Resistance in Colon Cancer via Her‐2/PI3K/AKT Signaling
Authors: Han Ying , Peng Yinghui , Fu Yaojie , Cai Changjing , Guo Cao , Liu Shanshan , Li Yiyi , Chen Yihong , Shen Edward , Long Kexin , Wang Xinwen , Yu Jian , Shen Hong , Zeng Shan 
Published: May 2020

AbstractThe rapid onset of resistance to cetuximab (CTX) limits its clinical utility in colorectal cancer (CRC) patients. This study aims to understand a potential role of mismatch repair gene mutL homolog 1 (MLH1) in CTX response. Functional analysis of MLH1 in Her‐2/phosphoinositide 3‐kinases (PI3K)/PKB protein kinase (AKT)‐regulated CTX sensitivity is performed using human CRC specimens, CRC cell lines with different MLH1 expression levels, and a subcutaneous xenograft model. Overexpression, knockdown, small interfering RNA, and inhibitors are used to examine the role of MLH1 and HER‐2 downstream signaling and apoptotic targets in CTX sensitivity. Reduced MLH1 expression is correlated with unfavorable prognosis in cetuximab‐treated patients. MLH1 loss decreases CTX sensitivity through Her‐2/PI3K/AKT signaling and apoptosis resistance in culture and in xenografts, while MLH1 overexpression increases CTX sensitivity. Blocking Her‐2 signaling increases CTX sensitivity of microsatellite instability CRC in vitro and in vivo. MLH1 loss induces activation of Her‐2/PI3K/AKT signaling and leads to cetuximab resistance in colon cancer.
A novel COVID‐19 based truck driver syndemic? Implications for public health, safety, and vital supply chains
Authors: Lemke Michael Kenneth , Apostolopoulos Yorghos , Sönmez Sevil 
Published: May 2020

AbstractU.S. long‐haul truck drivers traverse great distances and interact with numerous individuals, rendering them vulnerable to acquiring and transmitting coronavirus disease 2019 (COVID‐19). Together, the unique co‐occurrence of pronounced health disparities and known COVID‐19 infection, morbidity, and mortality risks suggest the possibility of a novel COVID‐19 based truck driver syndemic due to advanced driver age and endemic health issues. In turn, COVID‐19 sequelae may perpetuate existing health disparities. The co‐occurrence of afflictions may also result in compromised safety performance. To curb the likelihood of a COVID‐19 based truck driver syndemic, several action stepsare needed. First, key COVID‐19 metrics need to be established for this population. Second, relationships between long‐haul trucker network attributes and COVID‐19 spread need to bedelineated. Third, mutually reinforcing interactions between endemic health disparities and COVID‐19 vulnerability need to be elucidated. Finally, grounded in the aforementioned steps, policies and interventions need to be identified and implemented.