Role of inertia in the measurement of dynamic compliance

1975 ◽  
Vol 38 (1) ◽  
pp. 64-69 ◽  
Author(s):  
J. Dosman ◽  
F. Bode ◽  
J. Urbanetti ◽  
R. Antic ◽  
R. Martin ◽  
...  
Keyword(s):  
Frequency Dependence ◽  
Dynamic Compliance ◽  
Age Group ◽  
Older Individuals ◽  
Breathing Frequency ◽  
Frequency Dependent ◽  
Younger Age ◽  
Significant Difference ◽  
Males And Females

Dynamic compliance (Cdyn) was measured at different frequencies (breaths/min) in 30 nonsmoking males and females aged 30–59 yr. In those aged 30–49 yr Cydn at 90 breaths/min was significantly higher than at 15 breaths/min while those aged 50–59 yr showed no significant difference. Assuming an inertance of 0.01 cmH2O/l per s-2, and a sinusoidal breathing frequency, Cydn at 60 and 90 breaths/min was corrected for inertia. In the 30–49 yr age group corrected Cydn did not change with increasing frequency of breathing whereas in the 50–59 yr age group Cydn at 15 breaths/min was significantly higher than at 90 breaths/min (P is less than 0.05). In this age group, four of eight subjects were frequency dependent when corrected for inertia. These findings indicate that inertia influences Cydn at breathing frequencies of 60 per min and above. Unless this is taken into account, frequency dependence of compliance may be missed. The results also indicate that frequency dependence of compliance is normal in some older individuals but is not normal in the younger age group.

Smartphone-induced Behaviour: Utilisation, Benefits, Nomophobic Behaviour and Perceived Risks

2021 ◽  
pp. 097325862097951
Author(s):  
Kshitiz Sharma ◽  
T. Sarathamani ◽  
Sunil Kumar Bhougal ◽  
Hemant Kumar Singh
Keyword(s):  
Social Anxiety ◽  
Social Relationships ◽  
Private University ◽  
Age Group ◽  
Perceived Risks ◽  
Factors Influencing ◽  
Use Of Technology ◽  
Financial Benefits ◽  
Significant Difference ◽  
Males And Females

Smartphone has become an essential part of human lives. People tend to treat it as another part of their body. Besides communication purposes, it is used for searching information, monetary transactions, shopping, social networking, entertainment, etc. This study aims at analysing the factors influencing smartphone usage and behavioural changes among college students under four constructs: utilisation, benefits, nomophobic behaviour and perceived risks (UBNR). An instrument was created with factors concerning the research and administered in a top-ranked private university of Bangalore, India. The research was carried out with a total of 122 responses. The results show that there is no significant difference in the attitude of males and females in most of the factors except social anxiety. Females experience more social anxiety and use smartphone more for maintaining their social relationships. There is no significant difference between the age group of students in all the four constructs. Utilisation is positively related with psychological, social, functional and financial benefits and shows that the greater the usage of smartphone, the greater are the benefits. On the other hand, the study reveals that increased usage of smartphone leads to addiction, causes nomophobia and poses threat of perceived risks. A mediation strategy like educating the students for proper use of technology is necessary to overcome the risk of addiction and developing nomophobia.

scholarly journals Teacher Discrimination Reduces School Performance of African American Youth: Role of Gender

2018 ◽  
Vol 8 (10) ◽  
pp. 183 ◽  
Author(s):  
Shervin Assari ◽  
Cleopatra Howard Caldwell
Keyword(s):  
African American ◽  
School Performance ◽  
African American Youth ◽  
National Sample ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Grade Point ◽  
Significant Difference ◽  
Males And Females

Background: Gender may alter African Americans’ vulnerability to discrimination. The type of outcomes that follow exposure to discrimination may also be gender-specific. Although teacher discrimination is known to deteriorate school performance, it is yet unknown whether male and female African American youth differ in the effect of teacher discrimination on school performance. Objective: This cross-sectional study explored the moderating role of gender on the effect of teacher discrimination on school performance in a national sample of African American youth. Methods: The National Survey of American Life-Adolescent Supplement (NSAL-A) enrolled a nationally representative sample (n = 810) of 13–17-year-old African American youth. Demographic factors, socioeconomic status, teacher discrimination, and school performance (grade point average, GPA) were measured. Linear multivariable regression models were applied for data analysis. Results: Males and females reported similar levels of perceived teacher discrimination. In the pooled sample, higher teacher discrimination was associated with lower school performance among African American youth (b = −0.35; 95% confidence interval (CI) = −0.49 to −0.22). Gender interacted with perceived teacher discrimination (b = 12; 95% CI = 0.24–2.02), suggesting a significant difference between males and females in the magnitude of the association between perceived teacher discrimination and GPA. In stratified models, perceived teacher discrimination was associated with worse school performance of females (b = −12; 95% CI = −0.03 to −2.78) but not males (b = 0.01; 95% CI = −0.07 to 0.08). Conclusion: In line with previous studies, gender was found to alter the vulnerability of African American youth to perceived discrimination. African American boys and girls may differ in their sensitivity to the effects of teacher discrimination on school performance.

scholarly journals CLINICAL CHARACTERISTICS AND KINESITHERAPY TREATMENT OF CONGENITAL TORTICOLLIS MUSCULAR

2017 ◽  
Vol 10 (8) ◽  
pp. 366
Author(s):  
Zheralldin Durguti ◽  
Ardiana Murtezani ◽  
Eqrem Gara ◽  
Teuta Durguti
Keyword(s):  
Clinical Characteristics ◽  
Age Group ◽  
Physical Treatment ◽  
Significant Difference ◽  
Congenital Torticollis ◽  
In The Beginning ◽  
Muscular Torticollis ◽  
Neck Mobility ◽  
Therapy Clinic

  Objective: Torticollis is a deformity characterized by the lateral flexion of the head to the arm on the side of the localization of deformity and its rotation on the opposite side. The aim of this paper is to identify the clinical characteristics that have an impact on the progression of the congenital muscular cramping, as well as to show the role of kinesitherapy in the treatment of torticollis.Methods: The research was conducted in the “Therapy” - Physical Therapy Clinic in Pristina, in the 2-year period since February 2014 until 2016. The total number of infants diagnosed with torticollis is 160, ranging from 0 to 9 months. At the beginning of the research, the examinations of all infants were performed, all the necessary tests, measurements, and motor functions. Afterward, they were rehabilitated for 3 consecutive weeks with 5 sessions per week, a total of 15 sessions for each. After the rehabilitation was completed, over again, the same tests were made as it was done in the beginning. Questionnaires were completed on the first and last visit for all infants.Results: In the first visit of the infants’ examination, there was no significant difference between the groups (Chi-test=0.96, p=0.1), whereas in the second examination, after 15 rehabilitation sessions, there was a significant difference in improvement of all the treated groups with kinesiotherapy. Significant result was achieved in mobility where at the beginning of the treatment, there was a very large limitation of neck mobility (different mean = −31.0±10.0.95% CI: 33.7-−28.2, p<0.001). A small limitation of mobility remained only among some third-degree infants in the 6-9 month age group because of the time appearance for physical treatment was delayed (different mean = −27.8±12.6, 95%, CI: 31.2-−24.4, p<0.001).Conclusion: From the results of our research on kinesiotherapy with infant toddlers with torticollis, we conclude that kinesitherapy has a primary and very successful effect on the treatment of babies with muscular torticollis.

Cimetidine-induced prolactin release in rats The effect of sex and gonadal steroids

1987 ◽  
Vol 114 (2) ◽  
pp. 178-184 ◽  
Author(s):  
Hajime Watanobe ◽  
Kazuo Takebe
Keyword(s):  
Anterior Pituitary ◽  
Male Rats ◽  
Minor Role ◽  
Adult Males ◽  
Adult Age ◽  
Significant Difference ◽  
Males And Females ◽  
Plasma Prl ◽  
A Minor

Abstract. The cimetidine-induced plasma Prl response was examined in rats of both sexes. First, 10 week old intact adult males and females (dioestrous) were compared. There was no significant difference in the Prl response to cimetidine between the two groups, despite the fact that in adult females the anterior pituitary Prl content was 4 times greater than in males. Second, the effect of gonadal state in adult age on the Prl response to cimetidine was examined in both sexes. In male rats, gonadectomy at the age of 6 weeks significantly reduced the plasma Prl response as well as the pituitary Prl content, both of which were sufficiently restored by testosterone replacement. However, in females, neither gonadectomy at the age of 6 weeks nor subsequent oestradiol replacement affected the Prl response to cimetidine, despite the fact that gonadectomy significantly reduced and oestradiol treatment significantly enhanced the pituitary Prl content. Third, possible permanent effects of the postnatal gonadal milieu on the cimetidine-induced Prl response and the pituitary Prl content were examined in both sexes by castration at varying postnatal ages. The ratio of plasma Prl response to pituitary Prl content was similar in all castrated males. In females, however, the ratio decreased with increasing castration age. In conclusion, the mechanism of cimetidine-induced Prl release is less sex-dependent than are the mechanisms of Prl release by other Prl secretagogues. First, this may be due to a minor role of oestrogen in females in determining the Prl response to cimetidine. Second, the postnatal ovarian secretions may exert a permanent inhibition of the development of the cimetidine-mobilized anterior pituitary Prl pool.

scholarly journals Entamoeba histolytica and Entamoeba dispar infections as detected by monoclonal antibody in an urban slum in Fortaleza, Northeastern Brazil

2001 ◽  
Vol 34 (5) ◽  
pp. 467-471 ◽  
Author(s):  
Lúcia Libanez Bessa C. Braga ◽  
Manuela L. Gomes ◽  
Melissa W. da Silva ◽  
Clece Paiva ◽  
Andréa Sales ◽  
...  
Keyword(s):  
Urban Slum ◽  
Antigen Detection ◽  
Northeastern Brazil ◽  
Age Group ◽  
Entamoeba Dispar ◽  
Isoenzyme Analysis ◽  
Simple Tool ◽  
Significant Difference ◽  
Histolytica Infection ◽  
Males And Females

In this study the authors used the Elisa-based antigen detection tests that distinguish E. histolytica from E. dispar to examine the prevalence of E. histolytica infection in individuals from an urban slum in Fortaleza, Northeastern, Brazil. This test has a sensitivity and specificity that is comparable to PCR and isoenzyme analysis, which is the gold standard. Single stools samples were obtained from 735 individuals. The prevalence of E. histolytica infection was 14.9% (110/735) and 25.4%(187/735) for E. dispar-E. histolytica complex. The most affected age group for E. histolytica /E. histolytica-E. dispar infection was the 1-5 year olds but there was no remarkable decrease with age. There was no significant difference in colonization rates between males and females. The results from this survey demonstrate that E. histolytica is highly prevalent in the Community studied. Furthermore, it offers promise for the antigen detection test as a sensitive and technically simple tool for detecting E. histolytica infection in the field.

Age, Growth, and Sexual Maturity of the Shorthorn Sculpin, Myoxocephalus scorpius, in Newfoundland Waters

1970 ◽  
Vol 27 (12) ◽  
pp. 2155-2158 ◽  
Author(s):  
G. P. Ennis
Keyword(s):  
Growth Rates ◽  
Sexual Maturity ◽  
Average Length ◽  
Maximum Size ◽  
Age Group ◽  
Younger Age ◽  
Shorthorn Sculpin ◽  
Males And Females ◽  
The Difference ◽  
Myoxocephalus Scorpius

In Newfoundland waters, shorthorn sculpins, Myoxocephalus scorpius (L.), live to age 15 and attain a maximum size of just over 50 cm. The growth rates of males and females are little different below age 4, but above age 4 the females grow faster than the males, and the difference between average length-at-age for males and females gets progressively larger with age. Males mature at a younger age and at a smaller size than females. In any age-group where there are mature and immature individuals the mature ones are larger.

scholarly journals Melanin-concentrating hormone in peripheral circulation in the human

2017 ◽  
Vol 232 (3) ◽  
pp. 513-523 ◽  
Author(s):  
J Naufahu ◽  
F Alzaid ◽  
M Fiuza Brito ◽  
B Doslikova ◽  
T Valencia ◽  
...  
Keyword(s):  
Energy Homeostasis ◽  
Reference Range ◽  
Resting Metabolic Rate ◽  
Peripheral Circulation ◽  
Reference Ranges ◽  
Older Individuals ◽  
Rp Hplc ◽  
Melanin Concentrating Hormone ◽  
Males And Females

Melanin-concentrating hormone (MCH) is a hypothalamic neuropeptide with a well-characterised role in energy homeostasis and emergent roles in diverse physiologic functions such as arousal, mood and reproduction. Work to date has predominantly focused on its hypothalamic functions using animal models; however, little attention has been paid to its role in circulation in humans. The aims of this study were to (a) develop a radioimmunoassay for the detection of MCH in human plasma; (b) establish reference ranges for circulating MCH and (c) characterise the pattern of expression of circulating MCH in humans. A sensitive and specific RIA was developed and cross-validated by RP-HPLC and MS. The effective range was 19.5–1248 pg MCH/mL. Blood samples from 231 subjects were taken to establish a reference range of 19.5–55.4 pg/mL for fasting MCH concentrations. There were no significant differences between male and female fasting MCH concentrations; however, there were correlations between MCH concentrations and BMI in males and females with excess fat (P < 0.001 and P = 0.020) and between MCH concentrations and fat mass in females with excess fat (P = 0.038). Plasma MCH concentrations rose significantly after feeding in a group of older individuals (n = 50, males P = 0.006, females P = 0.023). There were no robust significant correlations between fasting or post-prandial MCH and resting metabolic rate, plasma glucose, insulin or leptin concentrations although there were correlations between circulating MCH and leptin concentrations in older individuals (P = 0.029). These results indicate that the role of circulating MCH may not be reflective of its regulatory hypothalamic role.

scholarly journals Influence of sex and age on sonographic infant hip indices

2014 ◽  
Vol 2 (4) ◽  
Author(s):  
Kakale SB ◽  
Tabari AM ◽  
Isyaku K ◽  
Yunusa A
Keyword(s):  
Imaging Modality ◽  
Alpha Angle ◽  
Late Presentation ◽  
Radiology Department ◽  
Age Group ◽  
Hip Joints ◽  
Non Invasive ◽  
Significant Difference ◽  
Males And Females ◽  
The Mean

Ultrasound is a non-invasive, cheap and readily available imaging modality for studying the infant hip. Early detection of developmental hip subluxation, acetabular dysplasia and the prevention of late presentation of a developmentally dislocated hip with consequent secondary premature degenerative arthritis are goals that all practitioners should strive for. Provision of axial indices of alpha and beta angles of the infant hip joint in Kano, Nigeria using ultrasonography to establish a normogram as reference values for further studies is the objective of this study. This descriptive prospective study was conducted at the Radiology Department of Aminu Kano Teaching Hospital, Kano state, Nigeria. Successive four hundred appropriately consented infants were recruited for this study. The axial angle relationships of both hip joints were measured using 7.5 MHz linear transducer of Mindray DP-8800 Digital plus ultrasound machine. The mean alpha and beta angles for both hips in females were 56.590 and 49.580 respectively while those for males were 56.730 and 50.530 respectively. Minimum and maximum alpha angle for both hips ranged from 380 to 780 while the beta angles ranged 290 to 660 respectively. The age group 1-3 months has the highest frequency of respondents (251) while age group 10 - 12 months has the lowest (22). There was no statistically significant difference in the alpha and beta angles between males and females hips and age of the infants did not affect the hip indices. The study showed no statistical significant difference in the measured alpha and beta angles between males and females. Age of measurement in infants did not affect the hip indices.

scholarly journals Role of cytohormonal study in normal pregnancy and in threatened abortion

2018 ◽  
Vol 7 (5) ◽  
pp. 1735
Author(s):  
Shailesh B. Patil ◽  
Milind B. Patil
Keyword(s):  
Normal Pregnancy ◽  
Fetal Outcome ◽  
Control Group ◽  
Vaginal Smear ◽  
Age Group ◽  
Number Of Patients ◽  
Significant Difference ◽  
Parity Number ◽  
Threatened Abortion

Background: It is certain from clinical experience of many that one or more hemorrhages in early pregnancy can still end up in good fetal outcome. So, our study deals with comparison of cytohormonal study in pregnancy and threatened abortion. The study was conducted with the aim of utilizing colpocytogram as a tool in assessing and treating cases of threatened abortion and comparing them with normal pregnant women.Methods: Patients attending antenatal care unit on outdoor basis and labelled as normal pregnancy cases were considered as control group. The patients of threatened abortion were studied when they were admitted in Gynecology department for indoor treatment. Patients were studied taking into consideration their age, parity, number of abortions, complaints (P/V bleeding, pain in abdomen), gestational age, per abdomen and per vaginal findings and also USG findings and vaginal smear pattern.Results: Maximum number of patients was present in the age group of 21-25 years in both the groups. While only 13.33% had normal smear pattern in threatened abortion group. 86.67% patients in threatened abortion group showed abnormal smear pattern. There is statistically significant difference was found (p<0.05). There is statistically significant was found (P<0.01) and indicates good effects of the drug on the vaginal epithelium.Conclusions: The cytohormonal study acts as a simple, reliable, good, noninvasive method for evaluation of hormonal pattern in normal pregnancy and threatened abortion. 

scholarly journals Association of Mandible Anatomy with Age, Gender, and Dental Status: A Radiographic Study

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Revant H. Chole ◽  
Ranjitkumar N. Patil ◽  
Swati Balsaraf Chole ◽  
Shailesh Gondivkar ◽  
Amol R. Gadbail ◽  
...  
Keyword(s):  
Age Groups ◽  
Age Determination ◽  
Dental Status ◽  
Age Group ◽  
Radiographic Study ◽  
Mandibular Angle ◽  
Panoramic Radiographs ◽  
Gonial Angle ◽  
Significant Difference ◽  
Males And Females

Introduction. Gonial angle and antegonial region are important landmarks in mandible which is influenced by gender, age, and dental status. The objective of this study was to evaluate the gonial angle, antegonial angle, and antegonial depth and to investigate their relationship to gender, age group, and dental status. Materials and Methods. A total of 1060 panoramic radiographs were evaluated: the dentulous group, 854 subjects and the edentulous group, 206 subjects. The patients were grouped into six age groups of 10-years each. Gonial angle, antegonial angle, and antegonial depth were measured from panoramic radiographs. Results and Discussion. Corelation of age with gonial angle, antegonial angle and antegonial depth was not significant. Significant difference in mandibular angle was found between males and females. Males had significantly smaller antegonial angle and greater antegonial depth than females. Significant difference was found for gonial angle, antegonial angle, and antegonial depth between right and left sides of mandible. Conclusion. Gonial angle, antegonial angle, and antegonial depth can be implicated as a forensic tool for gender determination but not suitable for age determination.

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