scholarly journals Self-repair of the Lepidopteran Proboscis

2019 ◽  
Vol 113 (1) ◽  
pp. 6-14 ◽  
Author(s):  
Suellen F Pometto ◽  
Charles E Beard ◽  
Patrick D Gerard ◽  
Konstantin G Kornev ◽  
Peter H Adler

Abstract Self-repair in the animal world typically involves regeneration of body parts. We present an example featuring the proboscis of butterflies and moths, which after separation of the galeae, undergoes nonregenerative repair. We demonstrated the ability of representative species to completely reunite (repair) the proboscis after total separation of the two galeae, and we showed that the repaired proboscis can take up fluid. Movements of the proboscis during repair were similar to the initial proboscis assembly after emergence from the pupa. We tested the influence of labial palps, wing movements, coiling, and fluid immersion on self-repair. These factors showed no statistically significant influence on the ability to repair the proboscis, with the exception of wing movements in one species. We suggest that the major selection forces driving assembly and repair have been the need to insert the proboscis into restricted openings of floral tubes to obtain nectar and the need for a united, compactly coiled proboscis to reduce air resistance during flight.

2016 ◽  
Vol 11 (4) ◽  
pp. 155892501601100
Author(s):  
Youngjin Moon ◽  
Jooho Song ◽  
Kybeom Kwon ◽  
Ogyeong Kwon ◽  
Mikyung Kim ◽  
...  

This study was carried out to improve speed skating uniforms through the development of materials to minimize air resistance and proper placement of the developed materials. Gliding of individual human body parts is studied via 3D simulation using Computational Fluid Dynamics. This study also conducted wind tunnel experiments by applying the developed uniform to a human-sized mannequin, based on cylinder wind tunnel experiment results on the empirically designed and developed knit textiles. As a result of the cylinder wind tunnel experiment for drag test on knit textiles, the existing product's drag coefficient was found to be 1.0, and the first-phase and second-phase developed textiles’ drag coefficients were 0.72 and 0.58, respectively. Therefore, air resistance was reduced, and the drag coefficients of the newly developed uniforms were lower than the existing uniform by 2.3~2.53%. From the results of this study, properly designed dimple-applied material reduces pressure drag by forming a turbulent boundary layer, compared to the material using smooth textile. A uniform consisting of the dimple-applied material is expected to improve athletic performance.


Author(s):  
Julia Huemer ◽  
Maria Haidvogl ◽  
Fritz Mattejat ◽  
Gudrun Wagner ◽  
Gerald Nobis ◽  
...  

Objective: This study examines retrospective correlates of nonshared family environment prior to onset of disease, by means of multiple familial informants, among anorexia and bulimia nervosa patients. Methods: A total of 332 participants was included (anorexia nervosa, restrictive type (AN-R): n = 41 plus families); bulimic patients (anorexia nervosa, binge-purging type; bulimia nervosa: n = 59 plus families). The EATAET Lifetime Diagnostic Interview was used to establish the diagnosis; the Subjective Family Image Test was used to derive emotional connectedness (EC) and individual autonomy (IA). Results: Bulimic and AN-R patients perceived significantly lower EC prior to onset of disease compared to their healthy sisters. Bulimic patients perceived significantly lower EC prior to onset of disease compared to AN-R patients and compared to their mothers and fathers. A low family sum – sister pairs sum comparison – of EC had a significant influence on the risk of developing bulimia nervosa. Contrary to expectations, AN-R patients did not perceive significantly lower levels of IA compared to their sisters, prior to onset of disease. Findings of low IA in currently ill AN-R patients may represent a disease consequence, not a risk factor. Conclusions: Developmental child psychiatrists should direct their attention to disturbances of EC, which may be present prior to the onset of the disease.


2002 ◽  
Author(s):  
Trent A. Petrie ◽  
Margaret M. Tripp ◽  
Pejcharat Harvey

1918 ◽  
Vol 86 (2232supp) ◽  
pp. 237-238
Author(s):  
R. W. Shufeldt
Keyword(s):  

1977 ◽  
Vol 16 (01) ◽  
pp. 30-35 ◽  
Author(s):  
N. Agha ◽  
R. B. R. Persson

SummaryGelchromatography column scanning has been used to study the fractions of 99mTc-pertechnetate, 99mTcchelate and reduced hydrolyzed 99mTc in preparations of 99mTc-EDTA(Sn) and 99mTc-DTPA(Sn). The labelling yield of 99mTc-EDTA(Sn) chelate was as high as 90—95% when 100 μmol EDTA · H4 and 0.5 (Amol SnCl2 was incubated with 10 ml 99mTceluate for 30—60 min at room temperature. The study of the influence of the pH-value on the fraction of 99mTc-EDTA shows that pH 2.8—2.9 gave the best labelling yield. In a comparative study of the labelling kinetics of 99mTc-EDTA(Sn) and 99mTc- DTPA(Sn) at different temperatures (7, 22 and 37°C), no significant influence on the reduction step was found. The rate constant for complex formation, however, increased more rapidly with increased temperature for 99mTc-DTPA(Sn). At room temperature only a few minutes was required to achieve a high labelling yield with 99mTc-DTPA(Sn) whereas about 60 min was required for 99mTc-EDTA(Sn). Comparative biokinetic studies in rabbits showed that the maximum activity in kidneys is achieved after 12 min with 99mTc-EDTA(Sn) but already after 6 min with 99mTc-DTPA(Sn). The long-term disappearance of 99mTc-DTPA(Sn) from the kidneys is about five times faster than that for 99mTc-EDTA(Sn).


2018 ◽  
Vol 26 (1) ◽  
pp. 13-29
Author(s):  
Erlangga Arya Mandala ◽  
Faresti Nurdiana Dihan

The Emotional intelligence, spiritual intelligence and job satisfaction to be part of the factors that influence performance. The purpose of this study was to determine the effect of emotional intelligence and spiritual intelligence on the performance through job satisfaction as an intervening variable partially and simultaneously. This study also aimed to determine the effect of emotional intelligence and spiritual intelligence on the performance through job satisfaction as an intervening variable directly and indirectly. This study was conducted to 77 respondents employees of PT. Madu Baru, Yogyakarta. The research method used is quantitative method uses statistical analysis and descriptive. The results of this study are (1) there is a significant effect of emotional intelligence on employee job satisfaction. (2) there is a significant influence of spiritual intelligence on employee job satisfaction. (3) There is a significant relationship between emotional intelligence and spiritual intelligence on job satisfaction. (4) There is a significant relationship between emotional intelligence on employee performance. (5) There is a significant relationship between spiritual intelligence on employee performance. (6) There is a significant relationship between emotional intelligence and spiritual intelligence on employee performance. (7) There is a significant relationship between job satisfaction on employee performance. (8) There is an indirect effect of emotional intelligence on the performance of employees through job satisfaction. (9) There is the indirect influence of spiritual intelligence on the performance of employees through job satisfaction. Keywords: emotional intelligence, spiritual intelligence, job satisfaction and employee performance


2020 ◽  
Vol 28 (1) ◽  
pp. 71-88
Author(s):  
Tyas Tunjung Sari ◽  
Pandu Nuansa Luhur

This study aims to determine the motivation of work to mediate the effect of training and work environment on employee performance at PT. Telkom Witel Yogyakarta Yogyakarta. The purpose of this study is to determine and analyze 1) the effect of training on employee performance at PT. Telkom Witel Yogyakarta 2) the effect of training on employee performance through motivation at PT. Telkom Witel Yogyakarta 3) the influence of the work environment on employee performance at PT. Telkom Witel Yogyakarta 4) the influence of the work environment on employee performance through motivation at PT. Telkom Witel Yogyakarta. This study uses primary data through research on 62 respondents. Structural Equation is used to analyze data, using PLS (Partial Least Square) version 2.0. The results of this study indicate that there are 1) positive and significant influence of training on employee performance 2) positive and significant influence of work environment on employee performance 3) positive and significant effect of training on employee performance through motivation 4) positive and significant influence of work environment on employee performance through motivation.


2018 ◽  
Vol 2 (1) ◽  
pp. 1-15
Author(s):  
Intan Nurrachmi

This study departs from the hajj bailout financing facility which is a booming product because of the customer's interest, but in this case there is a difference in the target achievement between Bank Syariah Mandiri (BSM) Ujungberung KCP which is less successful in improving the hajj bailout products while the Rancaekek KCP is very superior in one consolidation Ahmad Yani Branch Office Bandung. This is what is interesting for researchers to carry out this research, the difference constraints include service quality and promotion factors. This phenomenon raises problems that must be examined, namely how the influence of service quality and promotion of market share expansion products hajj bailouts at Bank Syariah Mandiri KCP Ujungberung and KCP Rancaekek Bandung. This study aims academically to contribute in the study of Islamic economics in worksheets, especially the quality of service and promotion of market share expansion and practically expected to be able to provide input to all employees of BSM KCP Ujungberung regarding the quality of service and promotion of market expansion of bailout products. Hajj that has been successfully carried out by BSM KCP Rancaekek.The conclusion of this study is that there is a significant influence of service quality on the expansion of market share by 53.3% with a strong correlation of 0.730 and through t test, where t counts at 8.245 (> t table), then H_0 is rejected and H_i is accepted. Furthermore, there is a significant influence of promotion on the expansion of market share by 30.3% with a moderate / sufficient correlation of 0.550 through t test, where t counts is 4.219 (> t table), then H_ (0) is rejected and H_i is accepted. Then there is a significant influence of service quality and promotion simultaneously to the expansion of market share by 60.6% and a strong correlation of 0.784 and through Test F, where F count is 67.023 (> F table), then 〖H〗 _ ( 0) rejected and H_i accepted.


2018 ◽  
Vol 16 (2) ◽  
pp. 30
Author(s):  
Dwikky Darmawan ◽  
Weny Putri

The purpose of this study is to determine the effects of political connection toward the earnings management of service sector companies with control variables firm size and audit quality. Firm�s political connection measured by using dummy variable. Earnings management is proxied by discretionary accrual which is measured by using Modified Jones Model. The research data applied in this study are the secondary data which are taken from the annual reports of service sector companies that listed in Indonesian Stock Exchange of 2016-2017 periods. There are 330 observations fit as sample, which are taken by using purposive sampling method. Data are processed by applying the multiple linear regression test. The result show that the political connection had positive but not significant influence to earnings management. Firm size had negative but not significant influence to earnings management. Whereas the audit quality had a negative and significant influence to earnings management.


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