bluuebunny/crossref_metadata_2025_split huggingface dataset:
Taxa de sucesso e complicações dos implantes
Authors: Barros Jennifer Claudine Semedo de , De Melo Callebe Carneiro , Isolan Cristina Pereira , Dietrich Lia 
Published: February 2024

A reabilitação protética com implantes osseointegrados é atualmente considerada o padrão ouro na restauração da função e da estética em pacientes parcialmente desdentados ou totalmente desdentados, pois permite a substituição de um dente em um único elemento dentário ou em uma arcada inteira. A falha dos implantes dentários é um fator de grande interesse para os cirurgiões-dentistas e pode ser classificada como falha precoce ou falha tardia. A falha precoce representa a falha em estabelecer a osseointegração dos implantes dentários, enquanto a falha tardia é a falha na osseointegração estabelecida ou na função dos implantes dentários. Objetivo: analisar através de uma revisão de literatura a taxa de sucesso e sobrevivência dos implantes, bem como os fatores que contribuem para o fracasso. . Metodologia: Uma estratégia de busca detalhada foi implementada para os bancos de dados pesquisados a seguir: PubMed e Google Acadêmico, de 2015 a 2021, para identificar estudos incluídos ou considerados neste trabalho. Os critérios para a inclusão foram os seguintes: revisões sistemáticas e revisões literárias, considerados estudos tanto em inglês quanto em Português.resultado: Após a análise dos artigos, verificou-se que a taxa de sucesso dos implantes e bem elevada em comparação com a taxa de insucesso, pode-se constatar que a taxa de sucesso varia entre 84,7% a 97,75%. E as causas para o insucesso dos implantes se dá pelos fatos sistêmicos e locais que seriam: diabetes mellitus, doenças periodontais, osteoporose, tabagismo, falha cirúrgica e ingestão de medicamentos à base de bisfosfonatos. Considerações finais: encontramos resultados altamente favoráveis para a taxa de sobrevivência e sucesso dos implantes, isso significa que há uma taxa muito baixa de complicações associadas aos implantes.
SMART PRODUCT BLENDING SYSTEM TO MAXIMISE QUALITY
Authors: Kayat Zainab , Othman A Rahim , Balasubramaniam Hemadevi 
Published: February 2024

PETRONAS developed a uniquely fast and exact automated fuel blending system that has accelerated the release of quality certification and achieved the perfect gasoline product blend for a Malaysian Refinery. Blending is a critical production process. Up to 13 different hydrocarbon streams from various feedstocks must be precisely blended to produce petroleum products such as Unleaded Gasoline RON 95. The ratio between flow velocities of different blending component streams is of great importance to ultimately achieve the target quality of the product. The ratio is determined based on the individual quality of the blending component. The underlying concept of this innovation is based on the strategy of an online blending with intelligent and fast chemometrics multivariate data analytics to make the necessary adjustment in the ratio of the blending components to meet the product quality. One of the integral parts of chemometrics multivariate data analytics is a spectroscopic analyser equipped with calibration models which enable multivariate prediction. The integration of the spectroscopic analyser and customised blend property control is an authoritarian system whereby it provides real-time data on fuel quality and enables online blending monitoring and control to happen seamlessly. PETRONAS has crafted an automated and integrated online blending system. This innovation has resulted in a more innovative product blending with zero re-blend and minimal quality giveaway in line with Industry 4.0 Best Practice.
Keywords: Chemometrics multivariate modelling, online blending, spectroscopy
INFLUENCE OF DIVIDEND PAYOUT RATIO, DEBT TO EQUITY RATIO, DECISIONS INVESTMENT AND PROFITABILITY ON FOOD AND COMPANY VALUE DRINK WHICH REGISTERED IN EXCHANGE EFFECT INDONESIA PERIOD 2019 – 2022
Authors: Jessy Safitri Sitorus  , Beby Adilla  , Nursairah Dabutar  , Agnes Hesty Demak Panjaitan  , Wenny Anggeresia Ginting  
Published: February 2024

This study aims to determine the influence of Dividend Payouts Ratio, Debt To Equity Ratio, Decision investment, Profitability On the Company Value Population in study This is company consumption sub sector food and beverages for 2019 – 2022 listed on the Indonesia Stock Exchange (IDX) Which amount 31 company Based on research results and discussion about InfluenceDividend Payouts Ratio, Debt To Equity Ratio, Decision investment, Profitability On the Value of Food and Beverage Companies Registered on Exchange Effect Indonesia Period 2019 – 2022. Can concluded as following: Variable Dividend Payouts Ratio (X1),variable Decision Investment (X3), And Profitability variable (X4) does not have a significant effect on variable Mark Company(Y) on Company Food and Drink Which Registered in Exchange Effect Indonesia 2019 - 2022. Variable Debt to Equity Ratio (X2)influential in a way significant to Company Value (Y) variable in Food and Beverage Companies Which Listed on the Stock Exchange Indonesia 2019 - 2022. Based on results study and discussion Which has obtained that the independent variable (X) is Dividend Payout Ratio, Debt To Equity Ratio, Decision Investment, And Profitability No influential in a way simultaneous tovariable dependent (Y) to Mark Company in Food and Beverage Companies Listed on the Stock Exchange Indonesia Period 2019 -2022.
PERAN GURU BIMBINGAN KONSELING MENGATASI KENAKALAN REMAJA DI SEKOLAH
Authors: Sejati Sugeng 
Published: February 2024

Masa remaja seringkali dihubungkan dengan penyimpangan dan ketidakwajaran. Kenakalan remaja merupakan suatu tindakan atau bentuk gejala patologis sosial yang disebabkan oleh satu bentuk pengabaian sosial. Akibatnya para remaja mengembangkan bentuk perilaku yang menyimpang. Kenakalan remaja disebabkan oleh adanya perubahan pada pribadi remaja, hal tersebut menunjukkan adanya usaha remaja untuk meningkatkan kualitas kepribadiannya. Remaja yang melakukan perbuatan nakal memerlukan perhatian bukan cacian ditimpakan pada mereka. Guru BK mempunyai peran yang sangat penting untuk menangani masalah kenakalan remaja yang terjad di sekolah.
Studies on Graded Levels of NPK on Growth and Yield of Parthenocarpic Cucumber (Cucumis sativus L.) under Naturally Ventilated Polyhouse Condition
Authors: Chavan B. R.  , Puri A. N  , Kalalbandi B. M.  , Tribhuwan A. R  , Ighare O. A  
Published: February 2024

The present study highlights on graded levels of NPK on growth and yield of parthenocarpic cucumber (Cucumis sativus L.) under naturally ventilated polyhouse condition. The graded level of NPK applied in parthenocarpic Cucumber (Cucumis sativus L.) under naturally ventilated polyhouse condition. The results in nutshell indicated that the growth, yield, quality, nutrient availability, nutrient uptake were significantly influenced by application of 125% NPK RDF of cucumber crop. The growth parameters viz., plant height 74.44, 99.18, 131, 153 and 194.58 cm at 30 DAT, 45 DAT, 60 DAT, 75 DAT and 90 DAT, Number of primary branches 8.24, 10.96, 15.40, 17.60 and 20.02 at 30 DAT, 45 DAT, 60 DAT, 75 DAT and 90 DAT, leaf area 163, 242.33, 307, 387.33 and 492.33 cm2 30 DAT, 45 DAT, 60 DAT, 75 DAT and 90 DAT, internodal distance, fruit length, fruit weight, fruit diameter, dry matter content, chlorophyll – a, chlorophyll – b and total chlorophyll content, number of leaves significantly increased with application of 125 % RDF with 7 days of intervals. Significantly higher number of fruits plant-1, number of primary branches, fruit yield plot-1, Leaf area and fruit yield ha-1, with application of 125 % RDF with 7 days of intervals. The improvement in quality parameters were recorded with application of 125 % RDF with 7 days of intervals. followed by treatments T6, T7, (100 % RDF with 2 and 7 days of intervals upto 90 DAT) and T8 (125% of RDF 2 days of interval up to 90 DAT).
A Study on the Attitude, Abuse and Addiction to Tramadol among Sudanese University Students in Khartoum State, Sudan
Authors: Ismail Mohamed I.A. , Almardi Mohammed O.J. , Jabir Mohammed M.A. , Brair Sara Lavinia , Bashir Intisar. A. , Abdalla Moneer A. , Hammad Almoeiz Y. 
Published: February 2024

Aim: This research was designed to study addiction to the drug Tramadol among university students in Khartoum State.
Introduction: Tramadol is an atypical opioid that binds to μ-opioid receptors on neurons. It has a bioavailability of 70% and undergoes extensive first-pass metabolism in the liver. In most countries, it is a prescription-only medicine. Tramadol abuse has increased recently in the last few years between private universities in Khartoum state, Sudan. Common adverse effects of opioids are nausea, vomiting, relaxation, itching, mental confusion, delirium, urinary retention, sweating.
Methodology: A study was conducted on 176 university students in Khartoum from August to September 2018. Ethical approval was obtained from sudan international university research commette and permission from each academic institution. A questionnaire sheet was developed to collect data related to drug abuse among students, including Sociodemographic data and knowledge about drug use without prescription. The collected data were statistically analyzed using ANOVA - IBM - Statistical Package for the Social Science version 16 programs-2008.
Results: A study of 176 university students found that most were male (79.5%) and female (20.5%), with an age range of 21-25. Most were medical students, with a minority in engineering, literacy, and computing fields. Most were aware of tramadol analgesic "pain killer" effect, but only 53.7% knew its hallucinogenic effect. Most abusers used tramadol for less than a year, with most starting in university life. Most abusers consumed various doses, with most consuming daily. Adverse effects of tramadol included physical symptoms, psychological symptoms, and attempts at quitting. Reasons for failure to quit were mainly compliance.
Conclusion: Tramadol abuse is prevalent among medical students in Sudan. Reasons for initiation include elation desire, avoidance of life conflicts, and curiosity.
Novel karyotypic changes detected by comparative genomic hybridization in a case of congenital cervical immature teratoma
Authors: Miliaras Dimosthenis , Grimbizis Grigoris , Conroy Jeffrey , Psarra Natasha , Miliaras Spyros , Nowak Norma , Bontis John 
Published: July 2005

AbstractBACKGROUNDCervical immature teratoma is a rare congenital tumor, and very few cases have been studied cytogenetically.CASEIn this article, we describe a case of this tumor type and present the findings of the karyotype of the lesion, which was performed with the bacterial artificial chromosome arrays using the comparative genomic hybridization method. The chromosomal abnormalities that we found included an amplification on 1p21.1, a 9p22 deletion, and a 1‐copy gain of 17q21.33.CONCLUSIONSNone of the identified chromosomal aberrations have been previously associated with congenital extragonadal teratomas. Important genes that lie in these DNA regions may be implicated in the pathogenesis of congenital teratomas. Birth Defects Research (Part A), 2005. © 2005 Wiley‐Liss, Inc.
Amifostine does not protect against the ototoxicity of high‐dose cisplatin combined with etoposide and bleomycin in pediatric germ‐cell tumors
Authors: Marina Neyssa , Chang Kay W. , Malogolowkin Marcio , London Wendy B. , Frazier A. Lindsay , Womer Richard B. , Rescorla Frederick , Billmire Deborah F. , Davis Mary M. , Perlman Elizabeth J. , Giller Roger , Lauer Stephen J. , Olson Thomas A. 
Published: July 2005

AbstractBACKGROUNDHigh‐dose cisplatin combined with etoposide and bleomycin (HDPEB) improves event‐free survival (EFS) in advanced pediatric germ‐cell tumors (PGCT), but has significant ototoxicity. Amifostine appears to protect against toxicity. The authors combined amifostine with HDPEB and evaluated the efficacy and toxicity, specifically whether ototoxicity deccreased.METHODSEligibility criteria included age < 15 years and unresectable Stage III/IV extracranial, extragonadal PGCT. Patients received bleomycin 15 IU/m2 on Day 1, then etoposide 100 mg/m2 per day, amifostine 825 mg/m2 per day, and cisplatin 40 mg/m2per day on Days 1–5, intravenously. The cycles were repeated every 3–4 weeks with imaging evaluation after 4 cycles. Patients with residual radiographic abnormalities underwent resection. Patients with residual tumor received two additional HDPEB cycles. Hearing evaluations were required at diagnosis and after two and four cycles. Audiologic results were reviewed and compared with historical controls treated with HDPEB.RESULTSTwenty‐five eligible patients were enrolled between April 2000 and April 2002. Their median age was 1.6 years (range, 0.64–13.9 years), 17 patients were female, 11 had metastases, and 24 had a yolk sac carcinoma component histologically. Primary sites included sacrococcygeal area/pelvis (n = 15), vagina (n = 5), and other (n = 5). Two‐year EFS and overall survival were 83.5% ± 12.8% and 85.6% ± 12.3%, respectively. Eight patients were removed from the study (four had progressive disease/disease recurrence and four had ototoxicity). Grade 3/4 toxicities included neutropenia (n = 20), thrombocytopenia (n = 14), electrolyte imbalances (n = 14), and gastrointestinal toxicity (n = 12). Twenty‐four of 25 patients received hearing evaluations, and 75% had significant hearing loss.CONCLUSIONSAmifostine did not protect against HDPEB‐associated ototoxicity. Cancer 2005. © 2005 American Cancer Society.
Overexpressed Id‐1 is associated with a high risk of hepatocellular carcinoma development in patients with cirrhosis without transcriptional repression of p16
Authors: Matsuda Yasunobu , Yamagiwa Satoshi , Takamura Masaaki , Honda Yutaka , Ishimoto Yuiko , Ichida Takafumi , Aoyagi Yutaka 
Published: July 2005

AbstractBACKGROUNDInhibitor of differentiation/DNA binding protein 1 (Id‐1) plays a pivotal role in the regulation of cell proliferation and carcinogenesis via inhibiting basic helix‐loop‐helix (HLH) transcription factors. Recently, Id‐1 was found to repress p16 in tumorous tissue specimens including hepatocellular carcinoma (HCC), but its relevance in precancerous liver tissues is unknown.METHODSId‐1 expression in the liver tissue specimens of 112 patients with cirrhosis without HCC was studied by immunohistochemical analysis. Correlations were investigated between Id‐1 expression and clinicopathologic features, the status of p16, and the risk of HCC occurrence.RESULTSA high expression of Id‐1 was observed in 42 patients (38%). The level of Id‐1 expression was not associated with clinical standard parameters or the status of p16 in cirrhotic tissue specimens. The cumulative incidence of HCC development was significantly higher in a group of patients with high Id‐1 expression (P = 0.0008). Multivariate analysis revealed that increased Id‐1 expression is an independent significant factor for the risk of HCC development in patients with cirrhosis (relative risk = 2.75, P = 0.003).CONCLUSIONSThe results of the current study suggested that increased expression of Id‐1 may play an important role in the early step of hepatocarcinogenesis, and might serve as a useful marker for determining patients with cirrhosis with a high risk of HCC occurrence. Cancer 2005;104. © 2005 American Cancer Society.
DNA methyltransferase 1 expression and promoter methylation of E‐cadherin in mucoepidermoid carcinoma
Authors: Shieh Yi‐Shing , Shiah Shine‐Gwo , Jeng Hao‐Hsuan , Lee Herng‐Sheng , Wu Cheng‐Wen , Chang Long‐Chang 
Published: July 2005

AbstractBACKGROUNDLoss of E‐cadherin expression is found frequently in many types of human malignancies, including mucoepidermoid carcinoma (MEC). CpG methylation in the promoter region has proven important in the regulation of gene expression implicated in malignant transformation. DNA methyltransferases (DNMTs) are the major enzymes involved in establishing genomic methylation patterns. The current study was designed to test the hypothesis that CpG methylation of the promoter region of the E‐cadherin gene may inactivate its expression and to examine DNMT 1 (DNMT1) protein expression in MEC.METHODSGenomic DNA was obtained from paraffin embedded sections by laser microdissection in 46 MEC specimens. Methylation status of the E‐cadherin promoter was examined by utilizing the methylation‐specific polymerase chain reaction assay. To examine E‐cadherin and DNMT1 proteins expression levels, the MEC specimens and adjacent epithelial tissues were studied immunohistochemically. Chi‐square analysis was used to evaluate the correlation of protein expression and E‐cadherin methylation status with clinicopathologic parameters. Comparisons of the survival rate between patients with DNMT1‐positive and DNMT1‐negative patients were made using Kaplan–Meier analysis.RESULTSThe data showed that all normal tissues expressed E‐cadherin, and no promoter methylation was detected. Of the MEC samples analyzed, methylation allele was found in 33 of 46 samples (72%), and reduced E‐cadherin expression was found in 21 of 46 samples (45%). DNMT1‐positive expression was observed in 29 of 46 MEC samples (63%). A significant correlation was found between E‐cadherin expression and the methylation status of E‐cadherin promoter (P = 0.021). In addition, increased DNMT1 expression was correlated with histologic grade, clinical stage, and a poor prognosis in patients with MEC.CONCLUSIONSHypermethylation of CpG sites at the 5′ promoter of E‐cadherin was a common event associated with E‐cadherin expression levels in MEC, suggesting an epigenetically mediated loss of E‐cadherin function in these tumors. Increased DNMT1 protein expression may play a critical role in the carcinogenesis and disease progression of MEC. Cancer 2005. © 2005 American Cancer Society.
Femtosecond S3→S1 Conversion and Structural Reorganisation of trans‐3‐Phenylprop‐2‐enaldehyde and Derivatives in Solution
Authors: Lustres J. L. Pérez , Farztdinov Vadim M. , Kovalenko Sergey A. 
Published: July 2005

AbstractPhotoinduced excited‐state relaxation of trans‐3‐phenylprop‐2‐enaldehyde (cinnamaldehyde) and three derivatives was studied in hexane and acetonitrile with the pump–supercontinuum‐probe technique. Transient spectra were measured with 50 fs resolution in the range 260–660 nm after S3←S0 excitation at 288 nm. The early spectra reveal an ultrafast, 0.1–0.5 ps, interchange of intensity between two excited‐state absorption (ESA) bands followed by a ≈3 ps decay of ESA. This behaviour is interpreted with the help of semiempirical calculations, which indicate that the sub‐picosecond evolution is consistent with S3→S1 excited‐state relaxation while the picosecond decay should be due to a structural intramolecular rearrangement. The latter may consist of a twist of the phenyl ring and rotation around the CC bond to a perpendicular conformation which corresponds to the global energy minimum in the S1 state and serves as source for trans and cis isomers in the ground state.
Kinetic and DFT Studies on the Ag/TiO2‐Photocatalyzed Selective Reduction of Nitrobenzene to Aniline
Authors: Tada Hiroaki , Ishida Tetsuji , Takao Ayako , Ito Seishiro , Mukhopadhyay Sudip , Akita Tomoki , Tanaka Koji , Kobayashi Hisayoshi 
Published: July 2005

AbstractTiO2 particles loaded with silver nanoparticles with a mean diameter of 1.5 nm exhibit a high photocatalytic activity (84 % conversion after 1 h irradiation) for the reduction of nitrobenzene to aniline with 100 % selectivity in the presence of CH3OH (concentration=100 mM). High‐resolution transmission electron microscopic studies of Pt‐photodeposited Ag/TiO2 demonstrate that the Ag nanoparticles act as reduction sites in the photocatalytic reaction. Both spectroscopic measurements and density functional theory (DFT) calculations reveal that nitrobenzene is selectively adsorbed onto the Ag surfaces of Ag/TiO2 via partial electron transfer from Ag to nitrobenzene, whereas the interaction between aniline and Ag/TiO2 is weak. The kinetic analysis indicates that the recombination between the electrons flowing into the Ag nanoparticle and the holes left in the TiO2 valence band is significantly suppressed, particularly in the presence of CH3OH. The high activity and selectivity in the present Ag/TiO2‐photocatalyzed reduction are rationalized in terms of the charge separation efficiency, the selective adsorption of the reactants on the catalyst surfaces, and the restriction of the product readsorption.
Imino‐ and Oxazolino‐Functionalised Pyrrolylphosphanes and Pyrrolylphosphinites: An Unexploited Class of Chiral P,N‐Bidentate Ligands with Unusual Electronic Properties
Authors: Gavrilov Konstantin N. , Tsarev Vasily N. , Konkin Stanislav I. , Lyubimov Sergey E. , Korlyukov Alexander A. , Antipin Mikhail Yu. , Davankov Vadim A. 
Published: July 2005

AbstractEnantiopure P,N‐bidentate pyrrolylphosphanes and pyrrolylphosphinites have been prepared based upon chiral imino‐ and oxazolino‐containing compounds. Complexation of the new ligands with [Rh(CO)2Cl]2 and [Pd(allyl)Cl]2 has been found to give the chelate complexes [Rh(CO)Cl(η2‐P,N)] and [Pd(allyl)(η2‐P,N)]+BF4–, respectively. Imino‐ and oxazolino‐functionalised pyrrolylphosphanes and pyrrolylphosphinites have been shown to be a novel class of P,N‐bidentate ligands possessing exceptional π‐acceptor and original σ‐donor properties. With these ligands, up to 77 % ee has been achieved in the asymmetric Pd‐catalyzed sulfonylation of 1,3‐diphenyl‐2‐propenyl acetate with sodium p‐toluenesulfinate. In the enantioselective alkylation of 1,3‐diphenyl‐2‐propenyl acetate with dimethyl malonate, up to 93 % enantioselectivity has been achieved by using [Pd(allyl)(η2‐P,N)]+BF4– complexes as chiral catalysts. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)
A Pulse Radiolysis Study of Catalytic Superoxide Radical Dismutation by a Manganese(II) Complex with an N‐Tripodal Ligand (Eur. J. Inorg. Chem. 14/2005)
Authors: Durot Stéphanie , Lambert François , Renault Jean‐Philippe , Policar Clotilde 
Published: July 2005

AbstractThe cover picture shows an allegory of bioinorganic chemistry and biomimetic studies. Here, the metalloprotein (human Mn‐SOD, PDB‐code 1MSD) is posing for the painter. As a bioinorganic chemist, he is designing new molecules that would reproduce this protein activity; he is testing the activity of these molecules and deciphering mechanisms. Here, we show the structure of a small MnII complex that has been studied for its SOD‐like activity by pulsed radiolysis. In the painting, the UV/Vis trace of a multipulse experiment at 300 nm is shown, with successive spikes and plateaus. An overall increase in the absorbance of the successive plateaus is observed. The asterisks indicate irradiations. Simulations of the individual growth of the spikes, of the individual decrease down to the plateau and of the overall increase of the absorbance for the successive plateaus leads to the proposition of a mechanism. This is the triangular cycle shown in the painting, involving an {MnOO}6 adduct between MnII and superoxide. This label, {MnOO}6, is proposed by analogy with the nomenclature used for iron−nitroxide adducts. Each event indicated in the cycle has been proven. Moreover, this study shows unambiguously that the MnII compound displays a catalytic activity for superoxide dismutation. Details are presented in the article by J.‐P. Renault, C. Policar et al. on p. 2789 ff. In the original picture by Magritte, the inset in the lower right‐hand corner, is entitled “La clairvoyance” (clear‐sightedness) and was painted in 1936.