bluuebunny/crossref_metadata_2025_split huggingface dataset:
El patrimonio cultural del poblado de Amaicha del Valle [Tucumán, Argentina]
Authors: Rossi Silvia Elina 
Published: February 2023

El Patrimonio Cultural de Amaicha del Valle constituye la expresión de los procesos sociales, económicos y culturales que estructuraron el poblado y el territorio circundante, haciendo visible la transformación histórica del valle. Se distinguen cuatro etapas en el desarrollo territorial: a) el período prehispánico, b) el período colonial, que se consolida a partir de fines del siglo XVIII, siendo Amaicha identificada como feudo o pueblo de indios, reducción y encomienda, c) el período republicano (siglo XIX), durante el cual la comunidad de Amaicha se traslada desde Encalilla fundándose, en noviembre de 1884, la Villa de Amaicha del Valle y d) el desarrollo de la Villa como poblado turístico a partir de fines de la década del 40 en el siglo XX. Cada una de estas etapas históricas se pueden leer a través de su valioso patrimonio cultural que comprende tanto el sistema de acequias como los corrales de tradición prehispánica o los edificios emblemáticos del poblado.
Evaluasi Pemanfaatan Metode Problem-Based Learning untuk Memotivasi Siswa SMK di Kota Magelang dalam Pembelajaran
Authors: Kurniawan Dwi Lathif 
Published: February 2023

<p><span data-preserver-spaces="true">Variations in replacing innovative methods in the learning process are needed so that students stay energized in the learning process. This research was conducted at one of the Vocational High Schools in Magelang City by utilizing the </span><em>Problem-Based Learning</em><span data-preserver-spaces="true"> (PBL) method to know the amplification of students' learning motivation in learning. This research is a Classroom Action Research (CAR) using four stages, namely First Planning; Second Action; Third Observation, and Fourth Reflection. The sample of this research was ten students of class X at SMK in the city of Magelang, who were determined using a purposive sample technique, namely sampling with a particular purpose. The data collected in this study used observation and interview techniques. The results showed that using </span><em>Problem-Based Learning</em><span data-preserver-spaces="true"> learning methods proved effective in amplifying the motivation of SMK students in Magelang City, especially in informatics subjects. Besides that, it can also improve learning outcomes optimally because the learning obtained is more meaningful.</span></p>
Evaluation of Unmanned Aerial Vehicle (UAV) Control Range System using Lora-Based Communication System using Path Loss
Authors: Hariyadi Mokhammad Amin , Fadila Juniardi Nur 
Published: February 2023

AbstractThis research aims to evaluate the communication system between the ground control system and the Unmanned Aerial Vehicle (UAV) using the Lora communication system based on its Path Loss data. Lora itself is a 433 MHz-based communication system used for very long-distance communication. As we know, today UAV market used a 2.4 GHz-based communication system because it is cheaper than using 433MHz. But, although it is cheaper than 433MHz, a lot of devices used the same frequency like WiFi systems and another wireless electrical components. That condition creates a lot of signal interference so communication between the ground control system and the UAV becomes shorter. 433MHz is not a new technology for a communication system, this frequency is usually used for radio news and long-range data logging. It is rarely used 433 MHz frequency for transmitting a big package of data because 433 MHz frequency has a slow data transfer rate but has a long data transfer distance. From testing, we got an improvement of control range more than twice with Lo-Ra 433 MHz compared to the 2.4 GHz module.Keywords: Control System, Lo-Ra, Long Range System, Radio Frequency, Transmission system, UAV Abstrak[Evaluasi Sistem Jarak Kendali Kendaraan Udara Tanpa Awak (UAV) Menggunakan Sistem Komunikasi Berbasis Lora Menggunakan Path Loss] Penelitian ini bertujuan untuk mengevaluasi sistem komunikasi antara ground control system dengan Unmanned Aerial Vehicle (UAV) menggunakan sistem komunikasi Lora berdasarkan data Path Loss-nya. Lora sendiri merupakan sistem komunikasi berbasis 433 MHz yang digunakan untuk komunikasi jarak jauh. Seperti yang kita ketahui, pasar UAV saat ini menggunakan sistem komunikasi berbasis 2,4 GHz karena lebih murah daripada menggunakan 433MHz. Tapi, meski lebih murah dari 433MHz, banyak perangkat yang menggunakan frekuensi yang sama seperti sistem WiFi dan komponen listrik nirkabel lainnya. Kondisi tersebut menimbulkan banyak gangguan sinyal sehingga komunikasi antara ground control system dan UAV menjadi lebih singkat. 433MHz bukanlah teknologi baru untuk sistem komunikasi, frekuensi ini biasanya digunakan untuk berita radio dan data logging jarak jauh. Frekuensi 433 MHz jarang digunakan untuk transmisi paket data yang besar karena frekuensi 433 MHz memiliki kecepatan transfer data yang lambat namun memiliki jarak transfer data yang jauh. Dari pengujian, kami mendapatkan peningkatan jangkauan kendali lebih dari dua kali lipat dengan Lo-Ra 433 MHz dibandingkan dengan modul 2,4 GHz.Kata Kunci: Sistem Kontrol, Lo-Ra, Sistem Jarak Jauh, Frekuensi Radio, Sistem Trnsmisi, UAV
A comparative study on the occurrence, risk factors, and genetic characteristics of Listeria species recovered from cattle farms, and beef abattoirs in Gauteng Province, South Africa
Authors: Gana James , Gcebe Nomakorinta , Moerane Rebone , Ngoshe Yusuf , Tshuma Takula , Moabelo Khomotso , Adesiyun Abiodun Adewale 
Published: February 2023

Abstract
These cross-sectional reported the occurrence, risk factors, and genetic characteristics of Listeria species recovered from cattle farms and beef abattoirs in Gauteng Province, South Africa. A total of 328 samples collected from 23 cattle farms and 262 samples from 8 beef abattoirs were processed using standard bacteriological and molecular methods to detect Listeria spp. The factors associated with the prevalence of Listeria spp. were investigated, and multiplex polymerase chain reaction (mPCR) was used to determine Listeria species, the pathogenic serogroups, and carriage of eight virulence-associated genes by Listeria monocytogenes. The overall prevalence of Listeria spp. in cattle farms was 14.6%, comprising Listeria innocua (11.3%), Listeria monocytogenes (3.4%), Listeria welshimeri (0.0%) compared with 11.1%, comprising Listeria innocua (5.7%), Listeria monocytogenes (4.6%), Listeria welshimeri (0.8%) for beef abattoirs. Of the three variables (area, type of farm/abattoir, and sample type) investigated, only the sample types at abattoirs had a significant (P < 0.001) effect on the prevalence of L. innocua and L. welshimeri. The frequency of distribution of the serogroups based on 11 L. monocytogenes isolated from farms was 72.7% and 27.3% for the serogroup 1/2a-3a and 4b-4d-4e, respectively, while for the 12 L. monocytogenes isolates recovered from abattoirs, it was 25%, 8.3%, 50% and 16.7% for the serogroup 1/2a-3a, 1/2b-3b, 1/2c-3c, and 4b-4d-4e respectively (P < 0.05). All (100.0%) isolates of L. monocytogenes from the farms and abattoirs were positive for seven virulence genes (hlyA, inlB, plcA, iap, inlA, inlC, and inlJ). The clinical and food safety significance of the findings cannot be ignored.
DLEU2 promotes proliferation and glycolysis of oral squamous cell carcinoma by regulating SIX1
Authors: CHEN DAN , XIANG LI 
Published: February 2023

Abstract
Objective
To look into the physiological functions of the lncRNA DLEU2 in the tumorigenesis of oral squamous cell carcinoma (OSCC), as well as whether it plays a role in the emergence and advancement of OSCC by governing SIX1.
Methods
The inhibitory role of DLEU2 on the proliferation of SCC-15 cells was examined by CCK8. Flow cytometry was used to study the influence of DLEU2 inhibitory activity on SCC-15 apoptotic cell death. In addition, trans-well assays were used to analyze the influence of DLEU2 suppression on SCC-15 cell differentiation and proliferation.
Results
The DLEU2 expression in OSCC cancerous specimens was considerably stronger than the corresponding healthy tissues; and DLEU2 was elevated in all four OSCC cells. The immunohistochemistry data also showed the level of DLEU2 was also greatly elevated in OSCC tissues than healthy specimens. After transfection of si-DLEU2, the viability of SCC-15 cells decreased significantly. Additionally, the number of apoptosis cells transfected with si-DLEU2 was significantly higher than controls. Using trans-well invasion assay, the data suggested the number of invasive cells formed by blocking DLEU2 of SCC-15 and SCC-25 cells was markerly lower than the controls. The results of ECAE and OCR also showed that DLEU2 could promote the glycolysis of OSCC cells while inhibit the oxidative phosphorylation progress of OSCC cells. Our subsequent analysis of the main enzymes affecting glycolysis, GLUT1 and HK2, showed that blocking expression of DLEU2 is able to obviously reduce the GLUT1 level, but not HK2. Subsequent ChIP experiments confirmed that SIX1 could bind to the promoter of GLUT1, and knocking down DLEU2 could reduce the binding ability of SIX1 to the promoter of GLUT1. Finally, we utilized luciferase assays to confirm that knockdown of DLEU2 expression could directly reduce GLUT1 transcript levels. The results of ECAR and OCR experiments also showed that overexpression of SIX1 could reverse the decreased glycolysis of OSCC cells brought down by knockdown of DLEU2.
Conclusion
DLEU2 is essential for OSCC tumorigenesis, migratory and glycogenolysis. The DLEU2/SIX1 role is implicated in OSCC cell invasion and aerobic glycolysis.
Residual stress superposition in milling process of thin-walled parts and comprehensive deformation control method
Authors: Shi Zhemin , Li Beizhi , Sun Zhihong 
Published: February 2023

AbstractThe processing deformation of thin-walled parts is difficult to control under the traditional process method because of the small rigidity of the parts and the large amount of removal. Simulation research of various process parameter combinations and engineering test are carried out for the typical thin-walled parts with 2mm wall thickness and diameter-thickness ratio more than 850 to solve the problem of deformation. Based on the umbrella-shaped special tool of YG8 tungsten steel, the influence of process parameters on the important indexes and distribution law of residual stress of thin-walled structure parts were studied. Residual stress superposition mechanism of process parameter combinations of semi-precision milling and fine milling are revealed. A process optimization method considering multiple deformation control objective of thin-walled parts is proposed, in order to improve residual stress and its distribution, reduce cutting deformation and the long-term stability of the thin-walled structure. The relative cross-section size, thickness, roundness and concentricity of thin-walled parts with conical surface were measured by roundness meter and CMM. Result reveals that the use of high-speed milling and the optimized combination of process parameters can effectively control residual stress and deformation.
Optimization on the Performance of Olea europaea (Olive Oil) Based Blended Esters with Butylated hydroxyanisole and Butylated hydroxytoluene using Response Surface Methodology - Central Composite Design: An Experimental Approach for Ecofriendly Biofuels
Authors: Thangaraj Hariharasudhan , David Prince Winston , Balachandran Gurukarthik Babu , Sivasekar Gowthama Kannan 
Published: February 2023

Abstract
In this paper, an effort is made to develop the alternate insulating liquid for the power transformer applications. With that aim, the edible natural esters such as refined Olea europaea (olive oil), rice bran oil, soya bean oil, sunflower oil and corn oil are investigated as the suitable replacement for the mineral oil (MO) used in the transformer. Also, the blended natural esters are made with olive oil and other natural esters for further analysis with the above aspiration for better insulating medium. The effect of antioxidants inclusion is also studied for analyzing the performance enrichment of blended natural esters. Butylated hydroxyanisole (BHA) and Butylated hydroxytoluene (BHT) were chosen as antioxidants for this work. In this study, we aim to investigate the role of key input factors [A-Speed, B-Time, and C-Temperature] on the output response [Y-Breakdown Voltage]. It was determined that the optimal condition for the [Y] is at [A] of 699.91 rpm, [B] of 49.95 min, and [C] of 88.75 ℃. In order to ensure natural esters are desirable, some critical properties are measured, such as Breakdown Voltage (BDV), viscosity, fire point (FeP), and flash point (FhP). In accordance with international standards such as American Society for Testing and Materials (ASTM) and International Electrotechnical Commission (IEC), measurements are conducted. From the results, it is observed that the natural esters and blended natural esters have the ability to use in the transformer as alternate insulating medium and also the antioxidants have the significant effect on the properties of natural ester combinations.
Providing a method for security analysis and evaluation of infrastructure services in cloud computing
Authors: Morshedi Roya , Matinkhah S Mojtaba 
Published: February 2023

Abstract
Today, cloud security is necessary to improve the service allocation, continuity of operations, storage management, information security and. In this way, analyzing the server in question and then defining a formal model by applying the security features is essential. In this paper, infrastructure services are described as services in cloud computing and each vulnerability is investigated. According to Petri's modeling tools, a new approach to assessing the security of infrastructure systems as a service is provided and analyzed. With the help of this method, the security of infrastructure systems as a service in cloud computing can be compared and evaluated. Consequently, using Petri's modeling tool, one of the most famous commercial systems of the infrastructure is modeled as a service called OpenStack, and the behavior of the attacks is evaluated. Applying this method to the OpenStack system demonstrates that our work is safe and that researchers, designers and cloud service providers are expected to make significant gains in delivering results.
LINC01137 facilitates pancreatic cancer stemness via the miR-7155-5p/KLF12/AKT axis
Authors: Peng Chenghong , Li Kexian , Feng Zengyu , Qin Kai , Luo Jiaxin , Ma Yang , Zhao Shiwei , Chen Peng , Lin Jiewei , Jiang Yongsheng , Han Lijie , Cao Yizhi , Shi Minmin , Chen Hao , Wang Jiancheng , Jiang L 
Published: February 2023

Abstract
Pancreatic cancer, of which pancreatic ductal adenocarcinoma (PDAC) is one of the most prevalent type, is one of the most malignant tumors, with a 5-year survival rate of about 10%. Pancreatic cancer stem cells play pivotal roles in chemoresistance and recurrence. Long non-coding RNAs (lncRNAs) have been identified as key regulators of the biological progression of various cancers. Recently, lncRNAs were found to be associated with cancer stem cells, which are related to chemoresistance. LINC01137 was predicted associated with pancreatic cancer stem cells, however, its function and underlying mechanisms in pancreatic cancer remain unclear. In this study, we found that LINC01137 was upregulated in pancreatic cancer tissues and cell lines. Its high expression correlated with advanced pathological stages and poor prognosis. Induction of LINC01137 expression boosted pancreatic cancer stemness, chemoresistance, and proliferation. Mechanistically, LINC01137 exerted its biological function by binding to miR-7155-5p to activate the KLF12/PI3K/AKT pathway. KLF12 also promoted LINC01137 expression. LINC01137 and KLF12 were involved in promoting PDAC tumorigenesis. Our results suggested that LINC01137 functions as an oncogene in pancreatic cancer and identified its post-transcriptional regulatory mechanisms, which may contribute to targeted therapy for pancreatic cancer.
Chiral Dirac fermion in a collinear antiferromagnet
Authors: Zhang Ao , Deng Ke , Sheng Jieming , Liu Pengfei , Kumar Shiv , Shimada Kenya , Jiang Zhicheng , Liu Zhengtai , Shen Dawei , Li Jiayu , Ren Jun , Wang Le , Zhou Liang , Ishikawa Yoshihisa , Zhang Qiang , McIntyre Garry , Yu Dehong , Liu Enke , Wu Liusuo , Chen Chaoyu , Liu Qihang 
Published: February 2023

Abstract
The Dirac equation combines the two cornerstones of modern physics—quantum mechanics and relativity. There are several manifestations of the Dirac equation in condensed matter systems, such as the quasiparticle dispersion in graphene1, topological insulators2-4, Dirac semimetals (DSMs)5-9, Weyl semimetals10-12, and d-wave high-temperature superconductors13. In a DSM, the massless Dirac fermion has zero chirality, leading to surface states connected adiabatically to a topologically trivial surface state as well as vanishing anomalous Hall effect (AHE). Recently, it is predicted that in the nonrelativistic limit of certain antiferromagnets, there exists a type of chiral “Dirac-like” fermion, whose dispersion manifests four-fold degenerate crossing points formed by doubly degenerate linear bands, with topologically protected Fermi arcs14. Such unconventional chiral fermion, protected by a hidden SU(2) symmetry in the hierarchy of an enhanced crystallographic group, namely spin space group15-17, is not experimentally verified yet. Here, by combining neutron diffraction, angle-resolved photoemission spectroscopy and first-principles calculations, we reveal the existence of the Fermi-arc surface states induced by chiral Dirac-like fermions in collinear antiferromagnet CoNb3S6, which caught great interest due to its surprisingly large AHE18-23. Our transport measurements and theoretical calculations provide a scenario that large Berry curvature embedded in the chiral fermions and weak symmetry breaking are responsible for the emergent AHE. Our work evidences the existence of chiral Dirac-like fermion in CoNb3S6, paving an avenue for exploring new emergent phenomena in quantum materials with unconventional quasiparticle excitations.
Dynamic model based adaptive sliding mode trajectory tracking control of pendulum-driven spherical mobile robot
Authors: Tian Xinyang , Xiang Hongwei , Yang Yanbo , Yan Meng , Zhan Qiang 
Published: February 2023

Abstract
Spherical mobile robot is a special non-chained nonholonomic system with underactuation and strong coupling, which make its trajectory tracking control very difficult and complex to realize. Precise trajectory tracking control depends on concise and accurate dynamic model. However, the current researches of trajectory tracking control rarely considered the influence of nonlinear factors and uncertain disturbances of spherical robot. In order to achieve strong robustness and anti-interference of trajectory tracking control of spherical robot, taking spherical mobile robot driven by a two-degrees of freedom pendulum as the research object, its complete dynamic model was established with Boltzmann-Hamel equation and simplified to obtain the one easy to control and with the key motion characteristics. Aiming at the modeling uncertainty of the spherical robot and the environment disturbances that may be encountered during movements, an adaptive sliding mode trajectory tracking control based on double power reaching law was proposed and proved to be stable by Lyapunov theorem. The effectiveness and robustness of the proposed control law are verified through simulations.
Telecom-band photodetection in MoS2/Au heterostructures via sub-band light absorption
Authors: Hong Chengyun , Oh Saejin , Dat Vu Khac , Low Tony , Oh Sang-Hyun , Kim Ji-Hee 
Published: February 2023

Abstract
Transition metal dichalcogenide (TMD) layered semiconductors possess immense potential in the design of photonic, electronic, optoelectronic, and sensor devices. However, sub-bandgap light absorption of TMD in the range from near-infrared (NIR) to short-wavelength infrared (SWIR) is insufficient for applications beyond the bandgap limit. Herein, we report that the sub-band photoresponse of MoS2 /Au heterostructures can be robustly modulated by the electrode fabrication method employed. We observed up to 60% sub-bandgap absorption in the MoS2 /Au heterostructure, which includes the hybridized interface, where the Au layer was applied via sputter deposition. The greatly enhanced absorption of sub-bandgap light is due to the planar cavity formed by MoS2 and Au; as such, the absorption spectrum can be tuned by altering the thickness of the MoS2 layer. Photocurrent in the SWIR wavelength range increases due to increased SWIR absorption, which means that broad wavelength detection from visible toward SWIR is possible. We also achieved rapid photoresponse (~ 164 µs) and high responsivity (17 mA W− 1) at an excitation wavelength of 1,550 nm. Our findings here demonstrate a facile method for optical property modulation using metal electrode engineering and for realizing SWIR photodetection in wide-bandgap 2D materials.
Malnutrition and visceral obesity predict adverse short-term and long-term outcomes in patients undergoing proctectomy for rectal cancer
Authors: Zhou Chong-Jun , Lin Yi , Liu Jie-Yu , Wang Zhong-Lin , Chen Xi-Yi , Zheng Chen-Guo 
Published: February 2023

Abstract
Background
There was no study explored the relationship of malnutrition and visceral obesity in rectal cancer patients following radical proctectomy. Therefore, we aimed to investigate the value of malnutrition and visceral obesity in patients with rectal cancer.
Methods
This study included patients with rectal cancer who underwent proctectomy. Malnutrition was defined by Global Leadership Initiative on Malnutrition (GLIM). Visceral obesity was measured by computed tomography (CT). Patients were classified into four groups according to the presence of malnutrition or visceral obesity. Univariate and multivariate logistic regression analyses were performed to evaluate the risk factors for postoperative complications. Univariate and multivariate cox regression analyses were performed to evaluate the risk factors for overall survival (OS). Kaplan-Meier survival curves and log-rank tests were performed by four groups in patients with rectal cancer.
Results
This study enrolled 624 patients. 204 (32.7%) patients in the well-nourished non-visceral obesity (WN) group, 264 (42.3%) patients in the well-nourished visceral obesity (WO) group, 114 (18.3%) patients in the malnourished non-visceral obesity (MN) group, and 42 (6.7%) patients in the malnourished visceral obesity (MO) group. In the multivariate cox regression analysis, Charlson comorbidity index (CCI), MN and MO were associated with postoperative complications. In the multivariate cox regression analysis, age, American Society of Anesthesiologists (ASA), tumor differentiation, tumor node metastasis (TNM), and MO were associated with worse OS.
Conclusion
This study demonstrated that the MO group had the higher postoperative complication and mortality rate and was a good indicator of poor prognosis in patients with rectal cancer.