scholarly journals Experience of using hypnosis in eye surgery

1929 ◽  
Vol 25 (1) ◽  
pp. 57-64
Author(s):  
T. Krylov
Keyword(s):  
Surgical Intervention ◽  
Eye Surgery ◽  
Long Time

Achieving painlessness and numbness is a very essential moment in any surgical intervention, which is why for a long time the minds of many surgeons have been intensely occupied with this issue, and even to this day, research in this area continues at an unabated pace.

scholarly journals Study of clinical and demographic profile of patients diagnosed with secretory otitis media

2017 ◽  
Vol 3 (3) ◽  
pp. 715
Author(s):  
Ajeet Kumar Khilnani ◽  
Viral Prajapati
Keyword(s):  
Tympanic Membrane ◽  
Otitis Media ◽  
Surgical Intervention ◽  
Tertiary Care ◽  
Complete Recovery ◽  
Treatment Modalities ◽  
Common Symptom ◽  
Secretory Otitis Media ◽  
Long Time ◽  
Bilateral Deafness

<p class="abstract"><strong><span lang="EN-US">Background:</span></strong>Secretory Otitis Media (SOM) is a common otological condition in children presenting most commonly with hearing loss. If untreated for long time, it can affect the language development of child. Its causes are multifactorial and treatment depends on the etiology. Various treatment modalities (medical and surgical) are available and they are administered in isolation or in combination. The objectives of the study were the present study was conducted with the objectives of knowing the most common age group affected by SOM, the common etiological factors of SOM and the outcome of various modalities of treatment of SOM.</p><p class="abstract"><strong><span lang="EN-US">Methods:</span></strong>This prospective study was conducted at a tertiary care teaching hospital of North Gujarat. IEC approval and consent from the patients were taken. 40 patients diagnosed with SOM were included in the study and their clinical and demographic details and treatment outcomes were studied.  </p><p class="abstract"><strong><span lang="EN-US">Results:</span></strong>Of the 40 patients, 65% were males. SOM was common in young children. Most of the cases (55%) were below 10 years of age. In 80% of cases SOM was bilateral. Deafness was the most common symptom (95%) with which patients presented with, followed by URTI and pain. All patients had impaired tympanic membrane mobility. Retraction of tympanic membrane was the next common otoscopic finding (85%). Initial management was medical and 18 patients required surgical intervention.</p><p class="abstract"><strong><span lang="EN-US">Conclusions:</span></strong>SOM is a common ear disorder in children. Initial medical treatment has a definitive role and should be tried in all cases before surgical intervention is contemplated. A variety of surgical procedures are available which can be used depending on the indication. Complete recovery is expected to occur in most of the cases by a period of 3-6 months.</p>

Current state of heart surgery in relation to some views on modern surgical science

1927 ◽  
Vol 23 (3) ◽  
pp. 340-347
Author(s):  
V. L. Bogolyubov
Keyword(s):  
Internal Medicine ◽  
Gastrointestinal Tract ◽  
Biliary Tract ◽  
Heart Surgery ◽  
Surgical Intervention ◽  
Progressive Movement ◽  
Current State ◽  
Long Time ◽  
Sphere Of Influence

Modern surgery is taking over more and more organs, recapturing more and more areas of internal medicine. We see that in its great progressive movement surgery gradually involves within its sphere of influence a whole range of diseases that previously belonged exclusively to the sphere of internal medicine, such as some diseases of the gastrointestinal tract, biliary tract, lungs, etc. We see that even those organs, which until so recently were considered inaccessible to the art of the surgeon, are beginning to be subject to surgical intervention. Such last inviolable organ, on which the hand of the surgeon has not encroached for a long time, is the heart.

scholarly journals Physiological Amputation of Limb (Limb Gangrene) after Tourniquet Application for 12 days following Snake Bite

2018 ◽  
Vol 1 (2) ◽  
pp. 101-104
Author(s):  
Ashok Kumar Yadav ◽  
R. Bhandari ◽  
A.K. Agrahari ◽  
R. Gupta ◽  
M.K. Shah
Keyword(s):  
Rural Areas ◽  
Traditional Healer ◽  
Surgical Intervention ◽  
Snake Bite ◽  
Shortness Of Breath ◽  
Left Forearm ◽  
Left Hand ◽  
Left Elbow ◽  
Long Time ◽  
Unusual Finding

Background: Application of tourniquet and herbs has been practiced since a long time in patients with different reptiles’ and arthropods’ bite at rural areas of the country, despite various cases of cellulitis and gangrene. Objective: To report a case of limb gangrene following tourniquet and herb application for snake bite. Case: A 20-years old farmer, who was bitten by a snake, presented to the Emergency department with complaints of blackish discoloration of his left forearm and hand. After clinical evaluation and investigations, patient underwent surgical intervention. Twelve days following snake bite, patient felt pain, noticed bleeding from bite site, swelling over his left hand, palpitation, shortness of breath and inability to speak. For which, he sought help from a traditional healer who applied a tourniquet over his left elbow and some herbs over the bite site. He noticed blackening of his fingers, which rapidly progressed to involve his left hand and forearm up to the site of tourniquet. He underwent surgery for the gangrenous limb. Conclusion: Development of gangrene following tourniquet is an unusual finding in modern day medicine. This case report shows the danger related to tourniquet application and need for measures to prevent such incidents in future.

Functional state of the cardiorespiratory system in patients with funnel chest deformity

1993 ◽  
Vol 74 (2) ◽  
pp. 119-123
Author(s):  
A. Yu. Plakseichuk ◽  
I. V. Klyushkin ◽  
T. A. Gaisina ◽  
M. V. Maleev ◽  
M. V. Yaushev
Keyword(s):  
Pectus Excavatum ◽  
Surgical Intervention ◽  
Funnel Chest ◽  
Functional Disorders ◽  
Diagnostic Equipment ◽  
Close Attention ◽  
Cardiorespiratory System ◽  
Chest Deformity ◽  
Long Time ◽  
Examination Methods

Functional disorders of the cardiovascular and respiratory systems with pectus excavatum (CFD) have attracted close attention of specialists for a long time. Modern examination methods based on the use of new diagnostic equipment allow obtaining more and more objective criteria for assessing these disorders. However, there are still no clear relationships between the degree of deformity and the severity of cardiorespiratory disorders. Therefore, indications for thoracoplasty are made for cosmetic or other subjective reasons, which is unacceptable in relation to such a complex surgical intervention.

200kv superconducting cryo electron microscope

1987 ◽  
Vol 45 ◽  
pp. 642-643
Author(s):  
M. Iwatsuki ◽  
Y. Kokubo ◽  
Y. Harada ◽  
J. Lehman
Keyword(s):  
Electron Microscope ◽  
Structure Analysis ◽  
Organic Materials ◽  
Strong Interactions ◽  
Specimen Preparation ◽  
Great Effort ◽  
Electron Microscopic ◽  
Crystal Fields ◽  
Special Skill ◽  
Long Time

In recent years, the electron microscope has been significantly improved in resolution and we can obtain routinely atomic-level high resolution images without any special skill. With this improvement, the structure analysis of organic materials has become one of the interesting targets in the biological and polymer crystal fields.Up to now, X-ray structure analysis has been mainly used for such materials. With this method, however, great effort and a long time are required for specimen preparation because of the need for larger crystals. This method can analyze average crystal structure but is insufficient for interpreting it on the atomic or molecular level. The electron microscopic method for organic materials has not only the advantage of specimen preparation but also the capability of providing various information from extremely small specimen regions, using strong interactions between electrons and the substance. On the other hand, however, this strong interaction has a big disadvantage in high radiation damage.

A Stationary Solution of High-Energy Electron Reflection (HEER) for An Arbitrary Surface

1990 ◽  
Vol 48 (2) ◽  
pp. 374-375
Author(s):  
YIQUN MA
Keyword(s):  
Stationary Solution ◽  
High Energy ◽  
Bloch Wave ◽  
Dynamical Theory ◽  
High Energy Electron ◽  
Bulk Materials ◽  
Periodic Surface ◽  
Electron Transmission ◽  
Electron Reflection ◽  
Long Time

For a long time, the development of dynamical theory for HEER has been stagnated for several reasons. Although the Bloch wave method is powerful for the understanding of physical insights of electron diffraction, particularly electron transmission diffraction, it is not readily available for the simulation of various surface imperfection in electron reflection diffraction since it is basically a method for bulk materials and perfect surface. When the multislice method due to Cowley & Moodie is used for electron reflection, the “edge effects” stand firmly in the way of reaching a stationary solution for HEER. The multislice method due to Maksym & Beeby is valid only for an 2-D periodic surface.Now, a method for solving stationary solution of HEER for an arbitrary surface is available, which is called the Edge Patching method in Multislice-Only mode (the EPMO method). The analytical basis for this method can be attributed to two important characters of HEER: 1) 2-D dependence of the wave fields and 2) the Picard iteractionlike character of multislice calculation due to Cowley and Moodie in the Bragg case.

Direct imaging of charge transfer

1996 ◽  
Vol 54 ◽  
pp. 680-681
Author(s):  
Yimei Zhu ◽  
J. Tafto
Keyword(s):  
Charge Transfer ◽  
Electron Diffraction ◽  
Scattering Amplitude ◽  
High Temperature Superconductors ◽  
Charge Carriers ◽  
Image Charge ◽  
Net Charge ◽  
Long Time ◽  
Electron Holes ◽  
First Time

The electron holes confined to the CuO2-plane are the charge carriers in high-temperature superconductors, and thus, the distribution of charge plays a key role in determining their superconducting properties. While it has been known for a long time that in principle, electron diffraction at low angles is very sensitive to charge transfer, we, for the first time, show that under a proper TEM imaging condition, it is possible to directly image charge in crystals with a large unit cell. We apply this new way of studying charge distribution to the technologically important Bi2Sr2Ca1Cu2O8+δ superconductors.Charged particles interact with the electrostatic potential, and thus, for small scattering angles, the incident particle sees a nuclei that is screened by the electron cloud. Hence, the scattering amplitude mainly is determined by the net charge of the ion. Comparing with the high Z neutral Bi atom, we note that the scattering amplitude of the hole or an electron is larger at small scattering angles. This is in stark contrast to the displacements which contribute negligibly to the electron diffraction pattern at small angles because of the short g-vectors.

Microstructural characterization of plasma-processed Ti-Al metal matrix composites

1989 ◽  
Vol 47 ◽  
pp. 552-553
Author(s):  
M. G. Burke ◽  
M. N. Gungor ◽  
M. A. Burke
Keyword(s):  
High Temperature ◽  
Titanium Aluminide ◽  
Plasma Processing ◽  
Microstructural Characterization ◽  
High Temperature Strength ◽  
Matrix Composites ◽  
Intermetallic Matrix ◽  
Long Time ◽  
Strength And Stiffness ◽  
Intermetallic Matrix Composites

Intermetallic matrix composites are candidates for ultrahigh temperature service when light weight and high temperature strength and stiffness are required. Recent efforts to produce intermetallic matrix composites have focused on the titanium aluminide (TiAl) system with various ceramic reinforcements. In order to optimize the composition and processing of these composites it is necessary to evaluate the range of structures that can be produced in these materials and to identify the characteristics of the optimum structures. Normally, TiAl materials are difficult to process and, thus, examination of a suitable range of structures would not be feasible. However, plasma processing offers a novel method for producing composites from difficult to process component materials. By melting one or more of the component materials in a plasma and controlling deposition onto a cooled substrate, a range of structures can be produced and the method is highly suited to examining experimental composite systems. Moreover, because plasma processing involves rapid melting and very rapid cooling can be induced in the deposited composite, it is expected that processing method can avoid some of the problems, such as interfacial degradation, that are associated with the relatively long time, high temperature exposures that are induced by conventional processing methods.

Gum arabic helps prepare better lacey polymer films for specimen support in electron microscopy

1993 ◽  
Vol 51 ◽  
pp. 240-241
Author(s):  
Shailesh R. Sheth ◽  
Jayesh R. Bellare
Keyword(s):  
Electron Microscopy ◽  
Polymer Films ◽  
Gum Arabic ◽  
Complete Removal ◽  
Ammonium Bromide ◽  
Release Agent ◽  
Astigmatism Correction ◽  
Long Time ◽  
Micro Holes ◽  
Cetyl Trimethyl Ammonium

Specimen support and astigmatism correction in Electron Microscopy are at least two areas in which lacey polymer films find extensive applications. Although their preparation has been studied for a very long time, present techniques still suffer from incomplete release of the film from its substrate and presence of a large number of pseudo holes in the film. Our method ensures complete removal of the entire lacey film from the substrate and fewer pseudo holes by pre-treating the substrate with Gum Arabic, which acts as a film release agent.The method is based on the classical condensation technique for preparing lacey films which is essentially deposition of minute water or ice droplets on the substrate and laying the polymer film over it, so that micro holes are formed corresponding to the droplets. A microscope glass slide (the substrate) is immersed in 2.0% (w/v) aq. CTAB (cetyl trimethyl ammonium bromide)-0.22% (w/v) aq.

On-line image readout in CTEM

1994 ◽  
Vol 52 ◽  
pp. 400-401
Author(s):  
K.-H. Herrmann ◽  
W. D. Rau ◽  
R. Sikeler
Keyword(s):  
Primary Electron ◽  
Digital Information ◽  
Electron Hole ◽  
Detection Technology ◽  
Long Time ◽  
On Line ◽  
Electron Image ◽  
Optical Transfer ◽  
Detection Quantum Efficiency ◽  
Technical Solutions

Quantitative recording of electron patterns and their rapid conversion into digital information is an outstanding goal which the photoplate fails to solve satisfactorily. For a long time, LLL-TV cameras have been used for EM adjustment but due to their inferior pixel number they were never a real alternative to the photoplate. This situation has changed with the availability of scientific grade slow-scan charged coupled devices (CCD) with pixel numbers exceeding 106, photometric accuracy and, by Peltier cooling, both excellent storage and noise figures previously inaccessible in image detection technology. Again the electron image is converted into a photon image fed to the CCD by some light optical transfer link. Subsequently, some technical solutions are discussed using the detection quantum efficiency (DQE), resolution, pixel number and exposure range as figures of merit.A key quantity is the number of electron-hole pairs released in the CCD sensor by a single primary electron (PE) which can be estimated from the energy deposit ΔE in the scintillator,

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