bluuebunny/crossref_metadata_2025_split huggingface dataset:
PENGARUH KELERENGAN TERHADAP STATUS UNSUR N, P, DAN K DAN PRODUKSI TANAMAN KAYU PUTIH PADA TANAH MEDITERAN DI BAGIAN DAERAH HUTAN KARANGMOJO
Authors: Handayani Wuri , Nurcholis Mohammad , Mulyanto Djoko 
Published: January 2021

Bagian selatan Gunungkidul didominasi oleh pegunungan batugamping, solum tanah yang tipis, kekurangan unsur hara, dan sumber air permukaan yang terbatas, sehingga tanahnya memiliki sifat-sifat fisik buruk. Kemiringan lahan merupakan salah satu faktor penting yang harus diprioritaskan, karena dapat menimbulkan limpasan yang dapat membawa partikel tanah dan unsur hara. Beberapa permasalahan tanah Mediteran antara lain ketersediaan air, pH tanah sering diatas 7 dan fiksasi unsur hara terutama N, P, dan K. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh kemiringan lereng terhadap kandungan N, P dan K. di dalam tanah dan untuk mengetahui pengaruh kemiringan terhadap produksi tanaman kayu putih. Penelitian ini dilaksanakan di Bagian Daerah Hutan Karangmojo Ruas Resort Pengelolaan Hutan (RPH) Nglipar plot 26 dengan kemiringan 0-8% dan RPH Kenet plot 47 dengan kemiringan 8-15% dan RPH Gelaran plot 32 dengan kemiringan 15-25%, Kabupaten Gunugkidul, Daerah Istimewa Yogyakarta. Penelitian ini menggunakan metode purposive sampling. Dalam penelitian ini terdapat tiga lereng yang masing-masing lereng dibuat dari tiga lokasi, di lokasi tersebut dipilih lima tanaman yang pertumbuhannya optimal untuk diamati profil tanahnya kemudian dilakukan pengambilan sampel tanah pada satu profil yang mewakili setiap horizon untuk dianalisis. Penghitungan produktivitas tanaman sampel dapat ditentukan dari percabangan dan daun sampel setelah dilakukan penimbangan. Pengamatan terhadap profil tanah meliputi: horizon, kedalaman lapisan, tekstur, struktur, dan warna tanah. Analisis sifat kimia tanah terdiri dari: pH, N-total, P-tersedia, K-tersedia, BV dan BJ. Hasil penelitian menunjukkan bahwa terdapat pengaruh kemiringan terhadap N, P, K dan produksi. Dimana unsur N-total tertinggi berada pada kemiringan 8-15%, unsur P tersedia tertinggi pada kemiringan 15-25%, unsur K-tersedia tertinggi berasal dari tiga lereng yang sama yaitu bernilai rendah dan produksi tanaman kayu putih tertinggi pada kemiringan 15-25%.
Mathematical modeling and forecasting of COVID-19: experience in Santiago de Cuba province
Authors: Ramirez-Torres E. E. , Selva Castañeda A. R. , Rodríguez-Aldana Y. , Sánchez Domínguez S. , Valdés García L. E. , Palú-Orozco A. , Oliveros-Domínguez E.R. , Zamora-Matamoros L. , Labrada-Claro R. , Cobas-Batista M. , Sedal-Yanes D. , Soler-Nariño O. , Valdés-Sosa P. A. , Montijano J. I. , Bergues Cabrales L. E. 
Published: January 2021

In the province of Santiago de Cuba, Cuba, the COVID-19 epidemic has a limited progression that shows an early small-number peak of infections. Most published mathematical models fit data with high numbers of confirmed cases. In contrast, small numbers of cases make it difficult to predict the course of the epidemic. We present two known models adapted to capture the noisy dynamics of COVID-19 in the Santiago de Cuba province. Parameters of both models were estimated using the approximate-Bayesian-computation framework with dedicated error laws. One parameter of each model was updated on key dates of travel restrictions. Both models approximately predicted the infection peak and the end of the COVID-19 epidemic in Santiago de Cuba. The first model predicted 57 reported cases and 16 unreported cases. Additionally, it estimated six initially exposed persons. The second model forecasted 51 confirmed cases at the end of the epidemic. In conclusion, an opportune epidemiological investigation, along with the low number of initially exposed individuals, might partly explain the favorable evolution of the COVID-19 epidemic in Santiago de Cuba. With the available data, the simplest model predicted the epidemic evolution with greater precision, and the more complex model helped to explain the epidemic phenomenology.
A new fractional mechanics based on fractional addition
Authors: Chung W. Sang , Hassanabadi H. , Maghsoodi E. 
Published: January 2021

In this paper we are to define a new velocity having a dimension of (Length)α=(Time) and a new acceleration having a dimension of (Length)α=(Time)2, based on the fractional addition rule. Using this we discuss the fractional mechanics in one dimension. We show the conservation of fractional energy and formulate the Hamiltonian formalism for fractional mechanics. We exhibit some examples of fractional mechanics.
Salvodara Persica As An Oral Aids For Edentulous Patients
Authors: Mohamed Nusima , Yacob Norlela , Wan Ali Wan Nor Syariza , Ali Aida 
Published: January 2021

Introduction: Salvadora percisa (popularly known as miswak) has been widely used as an aid for oral hygiene in dentate patient. There is no side effect of using miswak stick. A new approach introduced the role of miswak stick in edentulous patient. It may prevent the incidence of denture stomatitis among denture wearer. This study assessed the effectiveness of the miswak stick as an oral aid in edentulous patients as an alternative treatment for denture stomatitis. Materials and Methods: A clinical case control study included patients affected by denture stomatitis. The Miswak stick was introduced to the subjects to use as the oral device to clean the denture and oral mucosal area everyday. Pre- and postoperative assessment (clinical and photographic) were evaluated within 8 to 12 weeks and analysed by comparing the mapping of denture stomatitis inflammation. Results: A total of 11 subjects with denture stomatitis comprised as type 1; n=5 (46%), type 2; n=4 (36%) and type 3; n=2 (18%). 54.5% of subjects showed more than 50% reduction in the mapping of denture stomatitis inflammation (p<0.05) after the use of miswak stick. This study also showed that the use of miswak stick for more than 3 weeks to Type I and II denture stomatitis (54.6%) has successfully reduce the inflammation for more than 50%. 54.5% of the subjects with good denture hygiene has 50% more reduction of denture stomatitis. Conclusion(s): The miswak stick was significantly effective to reduce the denture stomatitis with a regular use and maintenance of good denture hygiene.
The Incidence Of Tori In Malaysians- A Retrospective Analysis
Authors: Shareif Alani Mohammed Subhi 
Published: January 2021

Introduction: The aim of this study was to determine the incidence of torus palatinus and torus mandibularis in Malaysians. The objectives are to evaluate the incidence of tori according to ethnicity, to assess the incidence of tori according to gender and to determine the incidence of torus palatinus vs torus mandibularis. Materials and Methods: This study was carried out in MAHSA Dental Clinic by collecting the data of 97 patients (15-74 years old) with 133 torus palatinus and torus mandibularis (2008-2014). Data included patient's age, race, gender, presence of the tori with their size; number and location. The presence of tori was confirmed by clinical inspection. Subjects were classified by their ethnicity as well as location of the tori. Impression and study casts were made for assessment of the size and shape of the tori. The tori were measured by A digital caliper and average size was graded by Reichart's classification. The data analyzed by Chi-Square test Results: Out of the 133 cases; 40% were Malay, 37% were Chinese and 23% were Indians with no significant finding (p-value=0.2783). 47.4% of the subjects were from the third decade of life. Male to female ratio 1:2 with 37% male and 63% female. Among all the cases, 53% were torus palatinus, 19% were torus mandibularis and 28% had both. Larger size of tori was found in Malays. Conclusion(s): The frequency of tori is relatively high in Malaysian population but unrelated to ethnicity. The etiology of tori seems to be multifactorial in nature and needs more researches to unravel.
Comparación del grado de microfiltración marginal en interfase diente/composite entre sistemas adhesivos de grabado total y autograbado
Authors: Córdova-López Andrea 
Published: January 2021

Objetivo: comparar el grado de microfiltración en interfase diente/composite entre sistemas adhesivos de grabado total y autograbado. Materiales y métodos: se realizó un estudio experimental in vitro con 62 premolares extraídos, sanos; a los cuales se les realizó una preparación cavitaria estandarizada Clase V, ubicada en la cara vestibular a 1mm de la línea amelocementaria, las cuales se restauraron con composite de microrelleno. Se dividió en 2 grupos, el grupo A (sistema adhesivo de grabado total) y el grupo B (sistema adhesivo de autograbado), posteriormente la muestra fue conservada en baño maría a 37°C por 24 horas. Se sometió la muestra a termociclado (300 ciclos), y se sumergieron en tinción para finalmente ser recortadas sentido longitudinal y observadas en esteroscopio determinando la ausencia o presencia de microfiltración marginal. Resultados: El 84,84% de especímenes del grupo A (sistema adhesivo de autograbado) presentaron microfiltración marginal; mientras que el 57,57% de especímenes del grupo B (sistema adhesivo de grabado total) Conclusión: La microfiltración marginal observada fue alta independiente al sistema adhesivo utilizado.
Palabras Claves: Microfiltracion, Sistemas Adhesivos, composite dental
KEBIJAKAN ORDE BARU VERSUS PENCURIAN KOREK API
Authors: Anjani Khairul Tri 
Published: January 2021

Juvenile delinquency in Jakarta Theft of Lighters in Student Boarding Areas 1965-1998. This study aims to determine the juvenile delinquency in Jakarta in the theft of matches in the 1965 student boarding area, besides that the authors also expect readers to understand juvenile delinquency in Jakarta. Research uses historical research methods. The method used is heuristics, criticism / verification, interpretation and historical writing. The results of the study understood the initial program of economic and education policy during the New Order government, could understand juvenile delinquency in the student settlement environment during the New Order government, outline match theft and its continued development until the end of the new order government.
El rendimiento académico de los estudiantes en situación de discapacidad
Authors: Oloriz Mario G. , Fernández Juan Manuel 
Published: January 2021

El rendimiento académico de los estudiantes, principalmente durante los primeros años de estudios universitarios, es uno de los factores con mayor incidencia respecto del abandono educativo. Se caracterizó el abandono en la Universidad Nacional de Luján (UNLu), analizando las posibles causas del fenómeno y estudiando el impacto de los Programas de Becas respecto de la mejora en la retención y el rendimiento académico de los estudiantes. La UNLu ha implementado desde el año 2008 una Comisión Permanente de Seguimiento de la Accesibilidad que tiene por finalidad contribuir a superar las barreras a la accesibilidad y la promoción de los estudiantes con discapacidad. Se abordó el estudio del rendimiento académico y abandono de aquellos ingresantes que declaran alguna situación de discapacidad al momento de su inscripción. Se trabajó con los ingresantes de las cohortes 2010 a 2015, encontrando un mejor desempeño de los estudiantes que se declararon en situación de discapacidad respecto de los demás integrantes de la misma corte, tanto en su desempeño académico como en la tasa de abandono y la tasa de graduación.
Chlamydia muridarum Can Invade the Central Nervous System via the Olfactory and Trigeminal Nerves and Infect Peripheral Nerve Glial Cells
Authors: Nazareth Lynn , Walkden Heidi , Chacko Anu , Delbaz Ali , Shelper Todd , Armitage Charles W. , Reshamwala Ronak , Trim Logan K. , St John James A. , Beagley Kenneth W. , Ekberg Jenny A. K. 
Published: January 2021

Chlamydia pneumoniaecan infect the brain and has been linked to late-onset dementia.Chlamydia muridarum, which infects mice, is often used to model human chlamydial infections. While it has been suggested to be also important for modelling brain infection, nervous system infection byC. muridarumhas not been reported in the literature.C. pneumoniaehas been shown to infect the olfactory bulb in mice after intranasal inoculation, and has therefore been suggested to invade the brainviathe olfactory nerve; however, nerve infection has not been shown to date. Another path by which certain bacteria can reach the brain isviathe trigeminal nerve, but it remains unknown whetherChlamydiaspecies can infect this nerve. Other bacteria that can invade the brainviathe olfactory and/or trigeminal nerve can do so rapidly, however, whetherChlamydiaspp. can reach the brain earlier than one-week post inoculation remains unknown. In the current study, we showed thatC. muridarumcan within 48 h invade the brainviathe olfactory nerve, in addition to infecting the trigeminal nerve. We also cultured the glial cells of the olfactory and trigeminal nerves and showed thatC. muridarumreadily infected the cells, constituting a possible cellular mechanism explaining how the bacteria can invade the nerves without being eliminated by glial immune functions. Further, we demonstrated that olfactory and trigeminal glia differed in their responses toC. muridarum, with olfactory glia showing less infection and stronger immune response than trigeminal glia.
Bathymetry and Shallow Seismic Imaging of the 2018 Flank Collapse of Anak Krakatau
Authors: Priyanto Wisnu S. , Hunt James E. , Hanif Muhammad , Tappin David R. , Permana Haryadi , Susilohadi  , Cassidy Michael , Yulianto Eko 
Published: January 2021

The flank failure and collapse of Anak Krakatau on December 22nd, 2018 triggered a destructive tsunami. Whether the prior activity of the volcano led to this collapse, or it was triggered by another means, remains a challenge to understand. This study seeks to investigate the recent volcano submarine mass-landslide deposit and emplacement processes, including the seafloor morphology of the flank collapse and the landslide deposit extent. Bathymetry and sparker seismic data were used during this study. Bathymetry data collected in August, 2019 shows the run-out area and the seafloor landslide deposit morphology. Bathymetry data acquired in May, 2017, is used as the base limit of the collapse to estimate the volume of the flank collapse. Comparisons between seismic data acquired in 2017 and 2019 provide an insight into the landslide emplacement processes, the deposit sequence, and structure below the seafloor. From these results we highlight two areas of the submarine-mass landslide deposit, one proximal to Anak Krakatau island (∼1.6 km) and one distal (∼1.4 km). The resulting analysis suggests that the submarine-mass landslide deposit might be produced by a frontally compressional, faulted, landslide, triggered by the critical stability slope, and due to the recent volcanic activity. Blocky seabed features clearly lie to the southwest of Anak Krakatau, and may represent the collapse blocks of the landslide. The seismic analysis of the data acquired in August, 2019 reveals that the blocky facies extends to ∼1.62 km in the width around Anak Krakatau, and the block thicknesses vary up to 70.4 m. The marine data provides a new insight into the landslide run out and extent, together with the landslide deposit morphology and structure that are not available from satellite imagery or subaerial surveys. We conclude that the landslide run out area southwest of the recent collapse, is ∼7.02 ± 0.21 km2.
PD-L1/PD-1 Pattern of Expression Within the Bone Marrow Immune Microenvironment in Smoldering Myeloma and Active Multiple Myeloma Patients
Authors: Costa Federica , Vescovini Rosanna , Marchica Valentina , Storti Paola , Notarfranchi Laura , Dalla Palma Benedetta , Toscani Denise , Burroughs-Garcia Jessica , Catarozzo Maria Teresa , Sammarelli Gabriella , Giuliani Nicola 
Published: January 2021

BackgroundThe PD-1/PD-L1 axis has recently emerged as an immune checkpoint that controls antitumor immune responses also in hematological malignancies. However, the use of anti-PD-L1/PD-1 antibodies in multiple myeloma (MM) patients still remains debated, at least in part because of discordant literature data on PD-L1/PD-1 expression by MM cells and bone marrow (BM) microenvironment cells. The unmet need to identify patients which could benefit from this therapeutic approach prompts us to evaluate the BM expression profile of PD-L1/PD-1 axis across the different stages of the monoclonal gammopathies.MethodsThe PD-L1/PD-1 axis was evaluated by flow cytometry in the BM samples of a total cohort of 141 patients with monoclonal gammopathies including 24 patients with Monoclonal Gammopathy of Undetermined Significance (MGUS), 38 patients with smoldering MM (SMM), and 79 patients with active MM, including either newly diagnosed or relapsed-refractory patients. Then, data were correlated with the main immunological and clinical features of the patients.ResultsFirst, we did not find any significant difference between MM and SMM patients in terms of PD-L1/PD-1 expression, on both BM myeloid (CD14+) and lymphoid subsets. On the other hand, PD-L1 expression by CD138+ MM cells was higher in both SMM and MM as compared to MGUS patients. Second, the analysis on the total cohort of MM and SMM patients revealed that PD-L1 is expressed at higher level in CD14+CD16+ non-classical monocytes compared with classical CD14+CD16− cells, independently from the stage of disease. Moreover, PD-L1 expression on CD14+ cells was inversely correlated with BM serum levels of the anti-tumoral cytokine, IL-27. Interestingly, relapsed MM patients showed an inverted CD4+/CD8+ ratio along with high levels of pro-tumoral IL-6 and a positive correlation between %CD14+PD-L1+ and %CD8+PD-1+ cells as compared to both SMM and newly diagnosed MM patients suggesting a highly compromised immune-compartment with low amount of CD4+ effector cells.ConclusionsOur data indicate that SMM and active MM patients share a similar PD-L1/PD-1 BM immune profile, suggesting that SMM patients could be an interesting target for PD-L1/PD-1 inhibition therapy, in light of their less compromised and more responsive immune-compartment.
Patients With Chronic Hepatitis C Virus Infection Are at an Increased Risk of Colorectal Cancer: A Nationwide Population-Based Case-Control Study in Taiwan
Authors: Su Fu-Hsiung , Bai Chyi-Huey , Le Thi Nga , Muo Chih-Hsin , Chang Shih-Ni , Te Arlene , Sung Fung-Chang , Yeh Chih-Ching 
Published: January 2021

AimStudies evaluating colorectal cancer (CRC) risk associated with chronic hepatitis C virus (HCV) infection are limited.MethodsIn this case-control study, we identify 67,670 CRC cases newly diagnosed from 2005 to 2011 and randomly selected 67,670 controls without HCV and CRC from the same database, frequency matched by age and sex of cases.ResultsResults of logistic regression analysis revealed that the adjusted odds ratio (aOR) of CRC was 1.16 (95% confidence interval [CI] = 1.08–1.24, p &lt; 0.001) in association with chronic HCV. The CRC risk was slightly greater for women than for men. The risk decreased with age, with the aOR decreased from 2.26 (95% CI = 1.32–3.87, p = 0.003) in patients under 45 years old to 1.31 (95% CI = 1.10–1.55, p = 0.03) in patients aged 50–59, and 1.10 (95% CI = 1.00–1.22, p = 0.061) in patients aged over 70.ConclusionsOur findings suggested that patients with chronic HCV infection are at an elevated risk of developing CRC. Our data also imply that the CRC prevention programs are needed to target younger HCV patients.
Effect of Induction Chemotherapy in Nasopharyngeal Carcinoma: An Updated Meta-Analysis
Authors: Yang Shan-Shan , Guo Jian-Gui , Liu Jia-Ni , Liu Zhi-Qiao , Chen En-Ni , Chen Chun-Yan , OuYang Pu-Yun , Han Fei , Xie Fang-Yun 
Published: January 2021

BackgroundPrevious meta-analysis had evaluated the effect of induction chemotherapy in nasopharyngeal carcinoma. But two trials with opposite findings were not included and the long-term result of another trial significantly differed from the preliminary report. This updated meta-analysis was thus warranted.MethodsLiterature search was conducted to identify randomized controlled trials focusing on the additional efficacy of induction chemotherapy in nasopharyngeal carcinoma. Trial-level pooled analysis of hazard ratio (HR) for progression free survival and overall survival and risk ratio (RR) for locoregional control rate and distant control rate were performed.ResultsTwelve trials were eligible. The addition of induction chemotherapy significantly prolonged both progression free survival (HR=0.68, 95% confidence interval [CI] 0.60–0.76, p&lt;0.001) and overall survival (HR=0.67, 95% CI 0.54–0.80, p&lt;0.001), with 5-year absolute benefit of 11.31% and 8.95%, respectively. Locoregional (RR=0.80, 95% CI 0.70–0.92, p=0.002) and distant control (RR=0.70, 95% CI 0.62–0.80) rates were significantly improved as well. The incidence of grade 3–4 adverse events during the concurrent chemoradiotherapy was higher in leukopenia (p=0.028), thrombocytopenia (p&lt;0.001), and fatigue (p=0.038) in the induction chemotherapy group.ConclusionsThis meta-analysis supported that induction chemotherapy could benefit patients with nasopharyngeal carcinoma in progression free survival, overall survival, locoregional, and distant control rate.
Salivary Gland Pleomorphic Adenomas Presenting With Extremely Varied Clinical Courses. A Single Institution Case-Control Study†
Authors: Piwowarczyk Krzysztof , Bartkowiak Ewelina , Kosikowski Paweł , Chou Jadzia Tin-Tsen , Wierzbicka Małgorzata 
Published: January 2021

ObjectivePleomorphic adenomas (PAs) with divergent clinical behavior, differing from the vast majority of PAs, were distinguished. “Fast” PAs are characterized by an unexpectedly short medical history and relatively rapid growth. The reference group consisted of “slow” PAs with very stable biology and long-term progression. We divide the PA group as a whole into three subsets: “fast,” “normal,” and “slow” tumors. Our goal is a multifactorial analysis of the “fast” and “slow” PA subgroups.MethodsConsecutive surgeries in a tertiary referral center, the Department of Otolaryngology and Laryngological Surgery, Poznan University of Medical Sciences, Poland, were carried out between 2002 and 2011. Out of 1,154 parotid tumors, 636 (55.1%) were PAs. The data were collected prospectively in collaboration with the Polish National Registry of Benign Salivary Gland Tumors. The main outcome measure was the recurrence rate in “fast” and “slow” PA subgroups. All surgical qualifications and surgeries were performed by two experienced surgeons.ResultsSlow PAs, compared to fast PAs, presented in older patients (53.25 ± 15.29 versus 47.92 ± 13.44 years). Multifactor logistic regression analysis with recurrence (yes/no) as the outcome variable, fast/slow as the predictor variable and age, gender, margin, FN status as covariates showed that fast PAs were significantly predicting recurrence vs. slow PAs (p = 0.035). Fast PAs were increasing the risk of PAs 10-fold vs. slow PAs, exp β = 10.20, CI95 [1.66; 197.87]. The variables impacting relapse were recent accelerated growth of the tumor OR = 3.35 (SE = 0.56), p = 0.030, positive margins OR = 7.18 (SE = 0.57), p &lt; 0.001, incomplete or bare capsule OR = 9.91 (SE = 0.53), p = 0.001 and location III OR = 3.12 (SE = 0.53), p = 0.033. In the multivariate model only positive margin was selected as the best predictor of relapse, OR = 5.01 (SE = 0.60), p = 0.007.ConclusionsThe simple clinical aspect of slow or fast PA progression is of great practical importance and can constitute a surrogate of the final histopathological information that is derived from the surgical specimen. The slow or fast nature of the PA to some extent indicates prognostic features such as recurrence risk. This finding requires correlation with histological and molecular features in further stages of research.