scholarly journals Sighting of Leith’s sand snake, Psammophis leithii (Gunther, 1896) with first photographic evidence at Jawai Bandh, District Pali, Rajasthan, India

Author(s):  
Omveer Dhawal ◽  
Sucheta Ganguly ◽  
Shwetadri Bhandari ◽  
Vivek Sharam ◽  
Uttam Chouhan ◽  
...  
Author(s):  
Godfrey C. Hoskins

The first serious electron microscooic studies of chromosomes accompanied by pictures were by I. Elvers in 1941 and 1943. His prodigious study, from the manufacture of micronets to the development of procedures for interpreting electron micrographs has gone all but unnoticed. The application of todays sophisticated equipment confirms many of the findings he gleaned from interpretation of images distorted by the electron optics of that time. In his figure 18 he notes periodic arrangement of pepsin sensitive “prickles” now called secondary fibers. In his figure 66 precise regularity of arrangement of these fibers can be seen. In his figure 22 he reproduces Siegbahn's first stereoscopic electron micrograph of chromosomes.The two stereoscopic pairs of electron micrographs of a human chromosome presented here were taken with a metallurgical stage on a Phillips EM200. These views are interpreted as providing photographic evidence that primary fibers (1°F) about 1,200Å thick are surrounded by secondary fibers (2°F) arranged in regular intervals of about 2,800Å in this metanhase human chromosome. At the telomere the primary fibers bend back on themselves and entwine through the center of each of each chromatid. The secondary fibers are seen to continue to surround primary fibers at telomeres. Thus at telomeres, secondary fibers present a surface not unlike that of the side of the chromosome, and no more susceptible to the addition of broken elements from other chromosomes.


1968 ◽  
Vol 16 (2) ◽  
pp. 177 ◽  
Author(s):  
A Mahmood

The use of the term cambium, or equivalent terms, in modern literature is discussed. The term cambial zone adopted in this paper includes the cambial initial and the dividing and enlarging cells. The tissue mother cell produced at each division of the initial produces a group of four cells in xylem or two cells in phloem. Theoretical constructs have been made for xylem and phloem production by associating the concepts that xylem and phloem are produced in alternate series of initial divisions and that a new primary wall is deposited around each daughter protoplast at each cell division. Correlations are derived from the theoretical constructs for the thickness of primary wall layers lying in the tangential direction and of those lying in the radial direction at progressive histological levels. Deductions from theoretical constructs are made when the initial is producing xylem, when it changes its polarity from xylem to phloem production, and when the reverse change occurs. Most of the theoretical deductions are supported by photographic evidence. The chief point of this study is the demonstration of generations (multiplicity) of primary parental walls. The term intercellular material proposed in this paper includes the cell plate plus any remnants of ancestral primary walls between the current primary walls surrounding the adjacent protoplasts. This term is still applicable to cells where secondary wall deposition is taking place or has been completed.


1982 ◽  
Vol 104 (4) ◽  
pp. 750-757 ◽  
Author(s):  
C. T. Avedisian

A study of high-pressure bubble growth within liquid droplets heated to their limits of superheat is reported. Droplets of an organic liquid (n-octane) were heated in an immiscible nonvolatile field liquid (glycerine) until they began to boil. High-speed cine photography was used for recording the qualitative aspects of boiling intensity and for obtaining some basic bubble growth data which have not been previously reported. The intensity of droplet boiling was found to be strongly dependent on ambient pressure. At atmospheric pressure the droplets boiled in a comparatively violent manner. At higher pressures photographic evidence revealed a two-phase droplet configuration consisting of an expanding vapor bubble beneath which was suspended a pool of the vaporizing liquid. A qualitative theory for growth of the two-phase droplet was based on assuming that heat for vaporizing the volatile liquid was transferred across a thin thermal boundary layer surrounding the vapor bubble. Measured droplet radii were found to be in relatively good agreement with predicted radii.


Author(s):  
Lindley Manning

The purpose of this paper is to inform the Academy of an application of computer graphics that has been successful in the court room and which has the potential for extension to many related needs of the forensic engineer. An additional purpose is to examine the possibility of cooperation within the Academy to make a broad database and selection of equipment available to the members. Attentive engineers of today are well aware of the growing use and impact of computer-aided drafting, design and analysis in a wide variety of industries. In our field, we are aware of large analysis programs which have been used with success in court, for example the CRASH series. The authors forensic engineering partnership has developed ways to utilize the more widely available drafting systems to inexpensively fill the gap between photographic evidence and full engineering drawings. We have also found that CAD drawings appear to have more impact in court than hand done drawings. In some cases


2018 ◽  
Vol 39 (8) ◽  
pp. 884-892 ◽  
Author(s):  
Andreas Nikolis ◽  
Kaitlyn M Enright ◽  
Sheetal Sapra ◽  
Julie Khanna

Abstract Background The first FDA-cleared, long-lasting, minimally invasive device for improving the appearance of cellulite was recently launched in Canada as a novel, tissue stabilized–guided subcision (TS-GS) system (Cellfina, Merz North America, Inc., Raleigh, NC). Clinicians from 2 of the first Canadian sites offering this procedure were interested in evaluating treatment efficacy and patient satisfaction after its first year on the market. Objectives The authors sought to evaluate the efficacy of TS-GS and the level of patient satisfaction associated with the procedure. Methods Medical charts of female patients treated with the TS-GS system in 2017 were retrospectively analyzed at 2 Canadian centers. Measurements at baseline and 3 months posttreatment were assessed for patient satisfaction and physician-rated efficacy. Patient satisfaction was assessed using a 5-point Likert-type scale, and efficacy was evaluated through physician review of 2-deminsional and 3-dimensional photography, the Nürnberger-Müller Scale for cellulite, and the Global Assessment of Improvement Scale. Results We reviewed 25 patient charts. At month 3, 95.6% of patients were satisfied with treatment results and physician evaluations revealed that on average, patients displayed a 1-point improvement in their cellulite grades. Moreover, Global Assessment of Improvement Scale scores indicated that all patients had visible improvement in the global appearance of cellulite. No serious adverse events were observed within 3 months postprocedure. Conclusions The physician ratings, patient satisfaction, and photographic evidence support the efficacy of the TS-GS system to manage grades 1 to 3 cellulite in women’s thighs and buttocks. These findings indicate the safety of the TS-GS system. Level of Evidence: 4


2001 ◽  
Vol 72 (3) ◽  
pp. 439-447 ◽  
Author(s):  
Richard M. Kostecke ◽  
George M. Linz ◽  
William J. Bleier

2019 ◽  
Vol 11 (4) ◽  
pp. 13497-13501 ◽  
Author(s):  
Shashank Poudel ◽  
Babu Ram Lamichhane ◽  
Santosh Bhattarai ◽  
Dipendra Adhikari ◽  
Chiranjibi Prasad Pokheral ◽  
...  

Twelve cat species were recorded in Nepal including the largest, Tiger Panthera tigris, and the smallest, Rusty-spotted Cat Prionailurus rubiginosus.  There is more research on the Panthera species than on small wild cats; consequently, the conservation status, distribution, and ecology of small cat species are poorly known.  In this article, we report on the first photographic evidence of Clouded Leopard Neofelis nebulosa and Fishing Cat Prionailurus viverrinus in Parsa National Park in southern central Nepal during a camera trap survey targeted at the tiger between 2014 and 2016.  There were only single detections of each species; this does not give enough information to establish distribution or conservation status of either of the species in Parsa National Park.  Further targeted surveys are needed to establish the significance of this protected area for the conservation of these two species.


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