Inner surface of regions in the anterior chamber taking part in the regulation of the intraocular tension, including the demonstration of the covering viscous substance

1968 ◽  
Vol 25 (1) ◽  
pp. 113-149 ◽  
Author(s):  
Jan Wolf
Keyword(s):  
Anterior Chamber ◽  
Inner Surface ◽  
Viscous Substance

A SEM and Light Microscope Study of the Epidermal Leaf Structures of the Carnivorous Plant, Sarracenia purpurea, L.

1971 ◽  
Vol 29 ◽  
pp. 358-359
Author(s):  
B. J. Panessa ◽  
J. F. Gennaro
Keyword(s):  
Methylene Blue ◽  
Toluidine Blue ◽  
Outer Surface ◽  
Microscope Study ◽  
Light Microscope ◽  
Carnivorous Plant ◽  
Sarracenia Purpurea ◽  
Inner Surface

Tissue from the hood and sarcophagus regions were fixed in 6% glutaraldehyde in 1 M.cacodylate buffer and washed in buffer. Tissue for SEM was partially dried, attached to aluminium targets with silver conducting paint, carbon-gold coated(100-500Å), and examined in a Kent Cambridge Stereoscan S4. Tissue for the light microscope was post fixed in 1% aqueous OsO4, dehydrated in acetone (4°C), embedded in Epon 812 and sectioned at ½u on a Sorvall MT 2 ultramicrotome. Cross and longitudinal sections were cut and stained with PAS, 0.5% toluidine blue and 1% azure II-methylene blue. Measurements were made from both SEM and Light micrographs.The tissue had two structurally distinct surfaces, an outer surface with small (225-500 µ) pubescent hairs (12/mm2), numerous stoma (77/mm2), and nectar glands(8/mm2); and an inner surface with large (784-1000 µ)stiff hairs(4/mm2), fewer stoma (46/mm2) and larger, more complex glands(16/mm2), presumably of a digestive nature.

Gastric Ulcers Produced by Cisplatin

1981 ◽  
Vol 39 ◽  
pp. 582-583
Author(s):  
S.K. Aggarwal ◽  
J. San Antonio
Keyword(s):  
Electron Microscopy ◽  
Single Dose ◽  
Side Effects ◽  
Antitumor Agent ◽  
Gastric Ulcers ◽  
Enzyme Cytochemistry ◽  
Intestinal Toxicity ◽  
Ovarian Cancers ◽  
Inner Surface

Cisplatin (cis-dichlorodiammineplatinum(II)) a potent antitumor agent is now available for the treatment of testicular and ovarian cancers. It is however, not free from its serious side effects including nephrotoxicity, gastro intestinal toxicity, myelosuppression, and ototoxicity. Here we now report that the drug produces peculiar bloating of the stomach in rats and induces acute ulceration.Wistar-derived rats weighing 200-250 g were administered cisplatin(9 mg/kg) ip as a single dose in 0.15 M NaCl. After 3 days the animals were sacrificed by decapitation. The stomachs were removed, the contents analyzed for pepsin and acidity. The inner surface was examined with a dissecting microscope after a moderate stretching for ulcers. Affected areas were fixed and processed for routine electron microscopy and enzyme cytochemistry.The drug treated animals kept on food and water consistently showed bloating and lesions (Fig. 1) with a frequency of 6-70 ulcers in the rumen section of the stomachs.

The Use of Oculopressor in Shallow Anterior Chamber Cataract Cases

2008 ◽  
Vol 225 (S 1) ◽  
Author(s):  
Z Bíró ◽  
T Kerek ◽  
K Aranyoss ◽  
P Gyaki
Keyword(s):  
Anterior Chamber ◽  
Shallow Anterior Chamber

Probabilistic evaluation of detection capability of eddy current testing to inspect pitting on a stainless steel clad using multiple signal features

2020 ◽  
Vol 64 (1-4) ◽  
pp. 47-55
Author(s):  
Takuma Tomizawa ◽  
Haicheng Song ◽  
Noritaka Yusa
Keyword(s):  
Stainless Steel ◽  
Eddy Current ◽  
Pressure Vessels ◽  
Eddy Current Testing ◽  
Probability Of Detection ◽  
Current Testing ◽  
Multiple Signal ◽  
Signal Features ◽  
Inner Surface ◽  
Drill Holes

This study proposes a probability of detection (POD) model to quantitatively evaluate the capability of eddy current testing to detect flaws on the inner surface of pressure vessels cladded by stainless steel and in the presence of high noise level. Welded plate samples with drill holes were prepared to simulate corrosion that typically appears on the inner surface of large-scale pressure vessels. The signals generated by the drill holes and the noise caused by the weld were examined using eddy current testing. A hit/miss-based POD model with multiple flaw parameters and multiple signal features was proposed to analyze the measured signals. It is shown that the proposed model is able to more reasonably characterize the detectability of eddy current signals compared to conventional models that consider a single signal feature.

Intensification of Open Gutters Operation

2020 ◽  
pp. 66-70
Keyword(s):  
Water Flow ◽  
Vortex Formation ◽  
Hydraulic Testing ◽  
Polymer Materials ◽  
Bottom Surface ◽  
Artificial Roughness ◽  
Transport Capacity ◽  
Corrugated Surfaces ◽  
Inner Surface ◽  
Dispersed Inclusions

The intensification of the work of open gutter by applying textured shells to their bottom surface, forming an artificial roughness, is considered. It is shown that the presence of corrugated surfaces contributes to vortex formation during water flow and improves the separation and transportation of mineral impurities previously dropped into the bottom of the gutters. The implementation of operations to improve the structure of the gutters is possible during the repair and restoration works with the use of modern polymer materials. The design of a small-sized hydraulic stand, which makes it possible to study the transport capacity of flows containing solid inclusions, is presented. The method of research is hydraulic testing, accompanied by the use of chiaroscuro effect, as well as photo and film equipment. The optimal structure of the inner surface of the gutters and pipes providing vortex formation, which will improve the ability of the flow to carry out and transport foreign dispersed inclusions (sand) of different granulometric compositions, is determined.

Pediatric Free-floating Anterior Chamber Cyst of the Iris Pigment Epithelium

2018 ◽  
Vol 1 ◽  
pp. 3
Author(s):  
Joshua S Agranat ◽  
Yoshihiro Yonekawa
Keyword(s):  
Optical Coherence Tomography ◽  
Anterior Chamber ◽  
Incidental Finding ◽  
Pigment Epithelium ◽  
Anterior Segment ◽  
Ultrasound Biomicroscopy ◽  
Optical Coherence ◽  
Visual Axis ◽  
Associated Malignancy ◽  
Anatomic Locations

Iris pigment epithelial (IPE) cysts are a subset of iris cysts that arise from the IPE. They are spontaneously erupting epithelial-lined cavities that are found in various anatomic locations of the iris, including the iris pupillary margin, midzone, periphery, and free floating in the vitreous or anterior chamber. We report the case of an asymptomatic 13-year-old boy with an incidental finding of a dislodged anterior chamber cyst diagnosed on routine examination. Modern multimodal image analysis of the cyst including anterior segment optical coherence tomography and ultrasound biomicroscopy (UBM) was utilized to characterize the microstructural anatomy of the lesion. The patient was managed conservatively without complications. Cysts of the IPE typically do not affect vision or ocular health and can be monitored and observed after ascertaining no associated malignancy. Initial diagnostic investigation can include UBM and anterior segment optical coherence tomography. Intervention should be reserved only for cases where the cyst growth leads to obstruction of the visual axis and/or other secondary complications.

The TNF-α level variation in the aqueous humour of the anterior chamber inindividuals with cataract

2020 ◽  
pp. 86-87
Author(s):  
V.S. Shevchenko ◽  
◽  
A.S. Prilutskii ◽  
K.Y. Tkachenko ◽  
◽  
...  
Keyword(s):  
Anterior Chamber ◽  
Aqueous Humour ◽  
Level Variation ◽  
Tnf Α ◽  
Α Level

Актуальность. Фактор некроза опухоли(TNF-α) является провоспалительным цитокином, продуцирующимся макрофагами и многими другими клетками. Данные о вариации концентрацииTNF-α во влаге передней камеры глаза у лиц, не имеющих выраженных воспалительных и аутоиммунных процессов практически единичны. Цель. Исследование диапазона вариации фактора некроза опухоли альфа во влаге передней камеры глаза у пациентов с возрастной катарактой. Материал и методы. Отобраны и обследованы 33 пациента, в возрасте от 47 до 82 лет, госпитализированных для плановой экстракции катаракты не имеющих выраженных сопутствующих воспалительных заболеваний (аутоиммунных, острых инфекционных болезней, обострением хронических заболеваний, глаукомы, перенесенного увеита и др.). Влага передней камеры забиралась при вскрытии передней камеры глаза во время факоэмульсификации катаракты. Исследование TNF-αпроводилось с помощью иммуноферментны хтест-систем, разработанных при участии сотрудников кафедры клинической иммунологии, аллергологии и эндокринологии ГОО ВПО «ДонНМУ им.М. Горького». Вышеуказанные тест-системы характеризует высокая чувствительность (0,5 пикограмм в миллилитре) и хорошая воспроизводимость. Результаты. При исследовании уровня TNF-αво влаге передней камеры глаза у пациентов с возрастной катарактой, мы выявили колебания данного показателя от 0 до 2,49 пкг/мл. Следует отметить, что полученные нами результаты показывают небольшую вариацию (в пределах низких значений) данного провоспалительного цитокина в исследованной жидкости у пациентов в возрасте от 47 до80 лет, не имеющих выраженной воспалительной(аутоиммунной и др.) патологии. Выводы. Показана низкая вариация TNF-α во влаге передней камеры глаза у пациентов с возрастной катарактой (у обследуемых исключена сопутствующая выраженная воспалительная патология). Результаты можно также использовать как контрольные при проведении сравнительныхисследований этого цитокина в данной среде у лицс различными заболеваниями глаза.

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