scholarly journals Beechwood density and changes of dimension at the locality Bor - Boljevac

2003 ◽  
pp. 171-185
Author(s):  
Borislav Soskic ◽  
Nebojsa Todorovic

The density and changes of dimension of beechwood were studied at the site Bor - Boljevac. Four trees were analyzed from different selected and established series of scientific and production experiments in the management units. The results were presented and statistically processed for the data measured at the height of 1. 3 m, and also for the data at three height levels along the technically valuable part of the stem. The study results show the difference between the trees and also within the same tree The study results were compared to the results from other localities in Serbia. They should contribute to the analysis and production of wood in this region.

2021 ◽  
Author(s):  
Neetu Tyagi ◽  
Rahila Sardar ◽  
Dinesh Gupta

AbstractThe Coronavirus disease 2019 (COVID-19) outbreak caused by Severe Acute Respiratory Syndrome Coronavirus 2 virus (SARS-CoV-2) poses a worldwide human health crisis, causing respiratory illness with a high mortality rate. To investigate the factors governing codon usage bias in all the respiratory viruses, including SARS-CoV-2 isolates from different geographical locations (~62K), including two recently emerging strains from the United Kingdom (UK), i.e., VUI202012/01 and South Africa (SA), i.e., 501.Y.V2 codon usage bias (CUBs) analysis was performed. The analysis includes RSCU analysis, GC content calculation, ENC analysis, dinucleotide frequency and neutrality plot analysis. We were motivated to conduct the study to fulfil two primary aims: first, to identify the difference in codon usage bias amongst all SARS-CoV-2 genomes and, secondly, to compare their CUBs properties with other respiratory viruses. A biased nucleotide composition was found as most of the highly preferred codons were A/U-ending in all the respiratory viruses studied here. Compared with the human host, the RSCU analysis led to the identification of 11 over-represented codons and 9 under-represented codons in SARS-CoV-2 genomes. Correlation analysis of ENC and GC3s revealed that mutational pressure is the leading force determining the CUBs. The present study results yield a better understanding of codon usage preferences for SARS-CoV-2 genomes and discover the possible evolutionary determinants responsible for the biases found among the respiratory viruses, thus unveils a unique feature of the SARS-CoV-2 evolution and adaptation. To the best of our knowledge, this is the first attempt at comparative CUBs analysis on the worldwide genomes of SARS-CoV-2, including novel emerged strains and other respiratory viruses.


RELIGIA ◽  
2017 ◽  
Vol 20 (1) ◽  
pp. 85
Author(s):  
Muhamad Rifa'i Subhi

Islam teaches the difference in someone's level of religiosity. The level of human religiosity can change from one moment to another. Humans have evolved a religious life. Including human experience in adulthood elderly in life and face the problems of life. This study focused on the real description of the attitude of religiosity which is owned by the elderly. The study was taken from the students at the boarding school Elderly Islamic boarding school (Pesantren) of Roudlotul Muta'allimin Dracik Kramat Batang. The research method used descriptive qualitative approach to straight dialogue (interview) of the respondents, namely the students of Elderly Islamic Boarding School (Pesantren). The study results showed that each of the students have the different religious involvement in filling elderly period (retirement). The involvement includes Ritual Involvement, Ideological Involvement, Intellectual involvement, experimental involvement, and consequential involvement.


2003 ◽  
Vol 60 (3) ◽  
pp. 273-278 ◽  
Author(s):  
Svjetlana Matkovic ◽  
Boris Kitanoski ◽  
Zivorad Malicevic

Background. Otosclerosis is a progressive osteo-destructive disorder of the bony labyrinth in which the fixation of the stapes causes the hearing loss. The aim of this study was the postoperative determination of parameters of the effect of surgical intervention on hearing and the incidence of complications and, on the basis of the differences in the examined parameters of the study, the estimation of the eficacy of the two mentioned surgical thechniques in the treatment of otosclerosis. Methods. In our research 40 patients with conductive hearing loss caused by otosclerosis underwent surgery with CO2 laser. Functional results were compared postoperatively with the results of 40 patients operated by the classical technique without the use of CO2 laser. The research was accomplished as a prospective comparative study. Results. The air-bone interval (gap) as the difference between the rim of air and bone conductivity for separate frequencies did not significantly differ between the control and the experimental group. Both methods were effective in closing the air-bone gap with the rates of closure to within 10 dB in 82.6% and 75.3% for the laser and drill, respectively. The incidence of tinnitus was significantly lower in patients who underwent surgery with CO2 laser. The frequency of intraoperative and postoperative complications was significantly lower in the laser group. Differences were statistically significant for all parameters (p<0.05). Conclusion. On the basis of the degree of postoperative hearing improvement, tinnitus and the incidence of complications it can be concluded that the use of CO2 laser during inverse stapedoplasty represents an effective and safe method, justifying the promotion of its use in the surgical management of otosclerosis.


2009 ◽  
Vol 6 (4) ◽  
pp. 532-541 ◽  
Author(s):  
Zhengwei Wang ◽  
Wei Lin ◽  
Michael Keefe

In Chinese transition economy, compared with state-owned firms, private firms face higher financial friction in financing activities, but have more incentive to adjust toward optimal capital structure to maximize the shareholders‟ benefit. Based on panel data of China’s listed firms from 1998 to 2007, we compare the capital structures of state-owned and privately-owned listed firms. The empirical results show that there is structural difference in static capital structure between state-owned and private listed firms while controlling for firm characteristics. We then investigate the difference in dynamics of the capital structure between these two groups of firms. Further study results tell us that the adjustment to an optimal capital structure to be faster for the private firm than for the state-owned firm.


2020 ◽  
Vol 1 (3) ◽  
pp. 203-212
Author(s):  
Arachie Augustine Ebuka ◽  
◽  
Hope Ngozi Nzewi ◽  
Emejulu Gerald ◽  
Kekeocha Mary Ezinne ◽  
...  

Purpose: This study examined how small businesses in Africa can use technology to grow and sustain their businesses in a post-Covid-19 world. The paper looked at various digital skills needed by these businesses to navigate and profit from the digital space's massive opportunities. It also ascertained the challenges facing them from keying into the digital ecosystem. The place of technology in the fight against Covid-19 was also highlighted. Research methodology: This study is a qualitative review study. Results: The study concluded that possessing some form of digital skills by business owners and employees could be the difference between a competing and a non-competing organization. Limitations: The work did not use methodology as it is a qualitative review study that limited the study's generalizability. Contribution: This work represents a current work in digital technology and how it relates to pandemic situations and economic challenges, especially in Africa. Keywords: Digital, Technology, Covid-19, Small businesses, Management, Skills


2020 ◽  
Vol 2 (2) ◽  
pp. 55-61
Author(s):  
Madiyo Madiyo ◽  
Dardiri Dardiri

This research is aimed to know (1) the difference of the students’ cognitive study results that used integrated-interconnected (confirmative models) physics module and physics module of heat. (2) the effect of using integrated-interconnected (confirmative models) physics module concering about the student’ cognitive study result. (3) the effect of using integrated-interconnected (confirmative models) physics module concering about the student’ interest in learning. This is a quasi-experiment research with Matching Pretest-Posttest Control Group Design. The variables consist of free variable that has the integrated-interconnected (confirmative models) physics module and bound variable that has the students’ interest and their study result. The population are all of 11th grade students of MAN 1 Bandar Lampung. Taking sample in this research is done by simple random sampling technique, so XI MIA2 is chosen as the experimental class and XI MIA3 is chosen as the controlling class. Instrument used in this research consist of pretest and posttes question, quesionnaire of the students’ interest and respons in learning. The technique of analysing data use T-test and simple regression analysis. The results of this research show that (1) there is a defference of the students’ cognitive study results that used integrated-interconnected (confirmative models) physics module and physics physics module of heat (tcalculation = 2,365 > ttable = 2,023, so Ha accepted). (2) there is a effect of using integrated-interconnected (confirmative models) physics module concering about the student’ cognitive study result with coefficient of regression 1,082. (3) there is a effect of using integrated-interconnected (confirmative models) physics module concering about the student’ interest in learning with coefficient of regression 0,624.


Medicina ◽  
2019 ◽  
Vol 55 (3) ◽  
pp. 77 ◽  
Author(s):  
Takashi Nakagata ◽  
Yosuke Yamada ◽  
Yoichi Hatamoto ◽  
Hisashi Naito

Background and objectives: The purpose of this study was to compare the energy expenditures (EE) of a single sit-to-stand (STS) movements with slow and normal speeds using a multi-stage exercise test. Materials and Methods: Twelve young males, aged 21–27 years (age, 23.0 ± 1.7 years; height, 171.2 ± 6.1 cm; weight, 64.3 ± 5.6 kg), performed repeated 3-s stand-up and 3-s sit-down (slow) or 1-s stand-up and 1-s sit-down (normal) movement on two different days with random order. All the participants completed multi-stage tests at different STS frequencies per minute. The slope and intercept of the linear regression relationship between the EE (kcal/min) and the STS frequency were obtained, and the slope of the regression was quantified as the EE of an STS. Results: The metabolic equivalents (METs) of the STS-slow was 4.5 METs for the frequency of 10 times/min (in total 1 min), and the net EE was 5.00 ± 1.2 kcal/min. The net EE of the STS-slow was 0.37 ± 0.12 kcal, which was significantly greater than that during the STS-normal (0.26 ± 0.06 kcal). The difference between the EEs of the STS-slow and STS-normal was significantly greater in taller and heavier subjects. Conclusions: We concluded that the intensity of STS-slow movement is moderate, and the EE during an STS-slow (0.37 ± 0.12 kcal) is higher than that during an STS-normal (0.26 ± 0.06 kcal). Our study results will help exercise and/or health professionals prescribe physical activity programs using STS movement for healthy young population groups.


2019 ◽  
Vol 160 (5) ◽  
pp. 186-190
Author(s):  
Bernadett Borda ◽  
Attila Nemes ◽  
Csaba Lengyel ◽  
Tamás Várkonyi ◽  
Ferenc Rárosi ◽  
...  

Abstract: Introduction: Increase of liver function is one of the most common complications after kidney transplantation due to the use of immunosuppressive therapy and hyperlipidemia in addition to hepatitis C virus (HCV) infection. Method: Following the selection criteria (n = 59), the study is based on applied immunosuppressive therapy, baseline data of patients, further correlation between HCV and liver function deterioration. Patients were subjected to fasting laboratory examination to monitor serum electrolytes, uric acid and albumin levels. We looked at the effects of immunosuppressive therapy on the lipids (TG, TC, HDL, LDL) and liver enzymes (GOT, GPT, ALP, GGT). The analysis of the relationship between lipids and liver enzymes was also included in our study. Results: The data basics were not significantly different between the tacrolimus and the cyclosporine groups. In the laboratory results, Mg levels were significantly different between the two groups (p = 0.044). The impact of HCV on the liver function was significantly different on GGT (p = 0.008). We examed the lipids and liver function level between the tacrolimus and the patients receiving cyclosporine-based immunosuppression and the total cholesterol (p = 0.005) and GOT (p = 0.05) were significantly different between the two groups. Hyperlipidemia was associated with 26% of patients taking tacrolimus-based immunosuppression, and 89% of those receiving cyclosporine; the difference was significant (p = 0.002). Regarding the effect of hyperlipidemia on liver enzymes, ALP (p = 0.006) and GGT (p = 0.0001) were significantly higher. Conclusion: Increases in hepatic enzymes, ALT and GGT indicate the damage to hepatocytes. Beside the increase of liver function, which is the main risk factor in hepatitis on HCV soil, the applied immunosuppressive therapy and hyperlipidemia lead to degradation of allograft function and long-term graft loss. Orv hetil. 2019; 160(5): 186–190.


2012 ◽  
Vol 2012 ◽  
pp. 1-14 ◽  
Author(s):  
Pierrick Coupé ◽  
Pierre Hellier ◽  
Xavier Morandi ◽  
Christian Barillot

The registration of intraoperative ultrasound (US) images with preoperative magnetic resonance (MR) images is a challenging problem due to the difference of information contained in each image modality. To overcome this difficulty, we introduce a new probabilistic function based on the matching of cerebral hyperechogenic structures. In brain imaging, these structures are the liquid interfaces such as the cerebral falx and the sulci, and the lesions when the corresponding tissue is hyperechogenic. The registration procedure is achieved by maximizing the joint probability for a voxel to be included in hyperechogenic structures in both modalities. Experiments were carried out on real datasets acquired during neurosurgical procedures. The proposed validation framework is based on (i) visual assessment, (ii) manual expert estimations , and (iii) a robustness study. Results show that the proposed method (i) is visually efficient, (ii) produces no statistically different registration accuracy compared to manual-based expert registration, and (iii) converges robustly. Finally, the computation time required by our method is compatible with intraoperative use.


2017 ◽  
Vol 78 (4) ◽  
pp. 335-347 ◽  
Author(s):  
Birgül Cerit

The study examined the influence of training on first-year nursing department students’ attitudes on death and caring for dying patients. Utilizing the experimental model, the study sample consisted of 81 first-year students attending the nursing department of a university. Death Attitude Profile-Revised and Frommelt Attitude toward Care of the Dying Scale were used for data collection. Data analysis included means, standard deviation, and t test for related samples. Student attitudes toward death were measured as 146.43 (16.741) and 152.75 (15.132) for pre- and posttraining, respectively. Student attitudes toward caring for dying patients were established to be 103.02 (7.655) during pretraining period and 111.02 (10.359) at posttraining period. The difference between pre- and posttests for mean attitudes toward death and caring for the dying patient was statistically significant. Study results determined that training was effective in forming positive student attitudes toward death and caring for dying patients.


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