scholarly journals Premaxilla: up to which age it remains separated from the maxilla by a suture, how often it occurs in children and adults, and possible clinical and therapeutic implications: Study of 1,138 human skulls

2018 ◽  
Vol 23 (6) ◽  
pp. 16-29 ◽  
Author(s):  
Mariana Trevizan ◽  
Paulo Nelson Filho ◽  
Solange de Oliveira Braga Franzolin ◽  
Alberto Consolaro

ABSTRACT Objective: To evaluate topographic and temporal aspects of premaxillary bone and premaxillary-maxillary suture, since they are fundamental anatomical elements little explored clinically. Methods: 1,138 human dry skulls were evaluated, of which 116 (10.19%) of the specimens were children, and 1,022 (89.81%) were adults. The skulls were photographed and the percentage of premaxillary-maxillary suture opening was determined. Subsequently the data were tabulated and submitted to statistical analysis, adopting a level of significance of 5%. Results: The progression of premaxillary suture closure from birth to 12 years of age was 3.72% per year. In 100% of the skulls up to 12 years, the premaxillary-maxillary suture open in the palatal region was observed, while 6.16% of adults presented different degrees of opening. Conclusions: The premaxilla exists in an independent way within the maxillary complex and the presence of the premaxilla-maxillary suture justifies the success of anteroposterior expansions to stimulate the growth of the middle third of the face, solving anatomical and functional problems.

Revista CERES ◽  
2017 ◽  
Vol 64 (1) ◽  
pp. 18-24
Author(s):  
Dayvid Vianêis Farias de Lucena ◽  
Fernanda Vieira Henrique ◽  
Amara Gyane Alves de Lima ◽  
Almir Pereira de Souza ◽  
Pedro Isidro da Nóbrega Neto

ABSTRACT The objective of this study was to investigate the effect of the ketoprofen on the preemptive analgesia in female cats submitted to ovariohysterectomy. Sixteen healthy cats were distributed into two groups, with eight animals each, by means of a draw, in a preemptive group (PREG), in which the animal received ketoprofen (1 mg/kg) subcutaneously two hours before the surgery; and postsurgery group (POSG), in which ketoprofen (1 mg/kg) was administered subcutaneously immediately after surgery. In both groups, ketoprofen was given 24, 48 and 72 hours after the first adminstration. Heart and respiratory frequencies and glycemia were measured in all animals during the days first ten postsurgery. Analgesia was measured by assigning scores at zero, two, four, six, 12, 24, 48, 72, 96, 120, 144, 168, 192, 216 and 240 hours after the surgical procedure. Statistical analysis was performed using two-way analysis of variance followed by Tukey's test to compare the moments and Student's t-test for comparison between groups. Pain scores were evaluated using test of U-Mann-Withney or Kruskall-Wallis, all at the 5% level of significance. Pain scores were significantly lower in PREG in M0, M6, M72, M96 and M120. No significant difference was found in the levels of glycemia in comparison to baseline values. Ketoprofen promotes postsurgery analgesia in female cats submitted to ovariohysterectomy and preemptive and postsurgery administration provides an earlier reduction of pain scores when compared to postoperative administration, only.


2002 ◽  
pp. 59-66
Author(s):  
Vojislav Bajic ◽  
Milorad Danilovic

Based on the elements of statistical analysis on the dependence of fuel and lubricant consumption on tree diameter, it was assessed that with the increase of tree diameter, the fuel and lubricant consumption in the young oak and hornbeam stands decreases significantly, both in clear felling and in thinning and that the function form Y=exp(a+b x X?1) is the best description of the correlation The consumption of fuel compared to lubricant consumption is almost double, which agrees with the results of the previous studies. Average consumption of fuel and lubricant is 17.43 mL x tree?1, on the plots 20.27 mL x tree?1, average consumption of lubricant per tree on skid roads is 9.4 mL x tree?1, on the plots 11 mL x tree?1. The higher consumption of fuel and lubricant on the plots with selective thinning is the consequence of the longer time needed for the conversion per tree, compared to that in clear felling The consumption of fuel per unit area on the skid roads (clear felling) is 22.9 L x ha?1, on the plots (selective thinning) 7.6 L x ha?1. The consumption of lubricant on the skid roads is 13.3 L x ha?1, on the plots 4.29 L x ha?1. The higher consumption of fuel and lubricant per unit area on the skid roads is due to the difference in the number of trees per unit area Based on the results of the analysis of variance, it was found out that between fuel and lubricant consumption in selective thinning and in felling the trees along tractor skid roads there is no statistically significant difference at the level of significance of 95%. So, for practical purposes, the unique norms of consumption can be established for the stands similar to those in which the study was performed.


2019 ◽  
Vol 2 (2) ◽  
pp. 390
Author(s):  
Ratna Ningsih Radjak

This study aims to determine the Effect of Professionalism and Organizational Commitment on Internal Auditor Performance on DKI Jakarta Representative BPK. The method used to determine the Effect of Professionalism and Organizational Commitment on Internal Auditor Performance uses multiple regression statistical analysis. Based on the research results and hypothesis testing it can be proven that partially the professionalism variable has a positive effect on the performance of the Internal Auditor. While the Organizational Commitment variable significantly influences the performance of the Internal Auditor. Simultaneously the variable Professionalism and Organizational Commitment significantly influence the performance of Internal Auditors. The ability of the variable Professionalism and Organizational Commitment to explain changes in Auditor Performance is equal to 60.8% and the rest is caused by other factors not examined. Of the three variables that most dominantly affect the performance of the Internal Auditor is Professionalism, based on the value of the regression coefficient and the t-level of significance of the Professionalism variable is higher than the Organizational Commitment variable. Thus the Auditor Professionalism really helps the Auditor to improve his performance.


2020 ◽  
pp. 12-20
Author(s):  
Javier Lapa-Guzmán ◽  
Juan Carlos Baltazar-Escalona ◽  
Eduardo Rosas-Rojas

The Mexican economy has a fragile and inefficient financing structure for the productive sector; which acquires great relevance in the face of the imminent economic recession that will follow the most critical period of the Covid-19 pandemic. In this paper, the evolution of the different financing channels is analyzed, in order to know, on the one hand, the composition of the financing of companies; and on the other hand, identify the type of company that presents the highest degree of vulnerability and that, therefore, the government should prioritize. For this, a statistical analysis is carried out both of the composition of the financing of the companies; as well as the characteristics of these companies and their relevance in the economic dynamics of the country.


Author(s):  
Lamis Elmy Abdelaaty

What explains state responses to the refugees they receive? This book identifies two puzzling patterns: states open their borders to some refugee groups while blocking others (discrimination), and a number of countries have given the United Nations (UN) control of asylum procedures and refugee camps on their territory (delegation). To explain this selective exercise of sovereignty, the book develops a two-part theoretical framework in which policymakers in refugee-receiving countries weigh international and domestic concerns. Internationally, leaders use refugees to reassure allies and exert pressure on rivals. Domestically, policymakers have incentives to favor those refugee groups with whom they share an ethnic identity. When these international and domestic incentives conflict, shifting responsibility to the UN allows policymakers to placate both refugee-sending countries and domestic constituencies. The book then carries out a “three-stage, multi-level” research design in which each successive step corroborates and elaborates the findings of the preceding stage. The first stage involves statistical analysis of asylum admissions worldwide. The second stage presents two country case studies: Egypt (a country that is broadly representative of most refugee recipients) and Turkey (an outlier that has limited the geographic application of the Refugee Convention). The third stage zooms in on sub- or within-country dynamics in Kenya (home to one of the largest refugee populations in the world) through content analysis of parliamentary proceedings. Studying state responses to refugees is instructive because it can help explain why states sometimes assert, and at other times cede, their sovereignty in the face of refugee rights.


PEDIATRICS ◽  
1959 ◽  
Vol 23 (3) ◽  
pp. 453-461
Author(s):  
Donald W. Polhemus ◽  
Richard Koch

Radiation histories were compiled on 251 leukemic children and compared with an equal number of matched controls. In general, exposure to radiation was significantly more frequent among the leukemic group. Thymic irradiation was found to be associated with six times the usual incidence of leukemia, the data being highly significant (p <.01). Statistical analysis of the data relative to fluoroscopic studies of the heart or gastrointestinal system, even though not highly significant, does indicate the possibility of a relationship between this type of radiation and an increased incidence of leukemia (p <.05). Diagnostic roentgenograms had been performed more frequently in the leukemic group, but the level of significance was not great (p <.05). Maternal exposure to roentgen rays during pregnancy had occurred somewhat more commonly in the leukemic group, but the difference was too small to be significant (p <.10).


Author(s):  
N. A. Fountas ◽  
A. A. Krimpenis ◽  
N. M. Vaxevanidis

Extracting CNC machining data on- or off-line demands thorough and careful planning. Exploitation of this data can be carried out by statistical methods, in order to obtain the most influential parameters along with their respective level of significance. However, significance of machining parameters varies according to the posed Quality Characteristics at each machining phase. In actual experiments, measuring devices and assemblies are used, and data is recorded in computer archives. To shorten the production time and cost, machining processes are planned on CAM software, especially when complex part geometries, such as sculptured surfaces, are involved. Hence, planning machining experiments using CAM software modules is an efficient approach for experimentation on the actual CNC machine tools. Data extraction and statistical analysis methodologies are presented along with respective machining experimental examples.


2019 ◽  
Vol 11 (1) ◽  
pp. 96
Author(s):  
Suleiman Mustafa EL-Dalahmeh

The main aim of the research was to identify the effect of Re-engineering of Administration Processes in Achieving the competitive Advantage of Sustainable in Five Star Hotels in Jordan. To achieve the objective of this study, a questionnaire distributed on 120 persons in Five Star Hotels in Jordan. 90 returned with a rate of 75%. The results of the study showed that there is a significant statistical effect at the level of significance of α ≤ 0.05 for the re - engineering of administrative processes in achieving sustainable competitive advantage in five - star hotels in Jordan in the following dimensions:* - Leadership * - Ability to analyze * - Advanced design * - Organizational communication * - Continuous improvementStrategic Planning. The total score of the mean of the study instrument was 4.43 and with a standard deviation of 0.35 and 88.6% at a very high degree.The results of the statistical analysis revealed the realization of the sample of the study in the investigated hotels, the extent of the effect of re-engineering the administrative processes in all its dimensions in achieving the competitive advantage.Based on the results of hypotheses tested, the six null hypotheses of the study were rejected. In the light of the findings, the researcher recommended that:1- The need to convince the management of hotels and hotel staff the importance of the application of re-engineering of administrative processes to achieve competitive advantage sustainable2- Utilizing the potential of graduates of new universities from the faculties of economics, administrative sciences and information technology. 


2015 ◽  
Vol 8 (7) ◽  
pp. 195 ◽  
Author(s):  
Arbabisarjou Azizollah ◽  
Farhang Abolghasem ◽  
Dadgar Mohammad Amin

<p><strong>BACKGROUND &amp; OBJECTIVE:</strong> Organizations effort is to achieve a common goal. There are many constructs needed for organizations. Organizational culture and organizational commitment are special concepts in management. The objective of the current research is to study the relationship between organizational culture and organizational commitment among the personnel of Zahedan University of Medical Sciences. </p><p><strong>MATERIALS &amp; METHODS:</strong> This is a descriptive- correlational study. The statistical population was whole tenured staff of Zahedan University of Medical Sciences that worked for this organization in 2012-2013. Random sampling method was used and 165 samples were chosen. Two standardized questionnaires of the organizational culture (Schein, 1984) and organizational commitment (Meyer &amp; Allen, 2002) were applied. The face and construct validity of the questionnaires were approved by the lecturers of Management and experts. Reliability of questionnaires of the organizational culture and organizational commitment were 0.89 and 0.88 respectively, by Cronbach’s Alpha coefficient. All statistical calculations performed using Statistical Package for the Social Sciences version 21.0 (SPSS Inc., Chicago, IL, USA). The level of significance was set at P&lt;0.05.</p><p><strong>FINDINGS:</strong> The findings of the study showed that there was a significant relationship between organizational culture and organizational commitment (P value=0.027). Also, the results showed that there was a significant relation between organizational culture and affective commitment (P-value=0.009), organizational culture and continuance commitment (P-value=0.009), and organizational culture and normative commitment (P-value=0.009).</p>


2001 ◽  
Vol 25 (1) ◽  
pp. 35-39
Author(s):  
Maria José de Carvalho Rocha ◽  
Mariane Cardoso ◽  
Joeci de Oliveira

A four-year-old child was presented to the Pediatric Dentistry Clinic of the Federal University, 21 days after an incident in which canine first and second primary molar teeth were avulsed, due to a trauma to the face. This was confirmed on radiological examination. The clinical examinations showed that tissues were normal. A removable space-maintaining dental-mucosa supported appliance was made in acrylic resin to replace the three missing teeth. After a period of eight months, the tissues were preserved, the device is helping the child to eat, to speak, and preserving the appearance of the patient. Radiograph examinations have shown that the first molar tooth and canine, first pre molar and second pre molar teeth are erupting normally. Trauma in primary dentition can cause psychological,morphological and functional problems. In the presented case the treatment was planned to recuperate the function and to avoid problems from the premature loss of primary teeth.


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