scholarly journals Morphological and anatomical characteristic of epiphyte ferns in Ronggo Soerjo Botanical Forest

2020 ◽  
Author(s):  
Eko Sri Sulasmi ◽  
Rido Sigit Wicaksono ◽  
Sulisetijono ◽  
Azizah Nur Rochmah ◽  
Hisyam Baidlowi ◽  
...  
Keyword(s):  
Anatomical Characteristic

Stent-Graft Migration following Endovascular Repair of Aneurysms with Large Proximal Necks: Anatomical Risk Factors and Long-term Sequelae

2002 ◽  
Vol 9 (5) ◽  
pp. 652-664 ◽  
Author(s):  
James T. Lee ◽  
Jason Lee ◽  
Ihab Aziz ◽  
Carlos E. Donayre ◽  
Irwin Walot ◽  
...  
Keyword(s):  
Stent Graft ◽  
Endovascular Repair ◽  
Morphological Changes ◽  
Morphological Characteristics ◽  
Anatomical Characteristic ◽  
Computed Tomographic ◽  
Aortic Neck ◽  
Distal Migration ◽  
Graft Migration ◽  
Over Time

Purpose: To evaluate the outcome of aortic endografts deployed in large infrarenal necks and to identify any association of preoperative aneurysm characteristics and postoperative morphological changes with the incidence of neck dilatation and device migration in this patient subset. Methods: The records of 47 patients (41 men; mean age 74, range 55–84) with large aortic neck diameters treated with Talent stent-grafts from 1998 to 2001 were reviewed. Patients with anatomical criteria that precluded aneurysm exclusion with currently available devices were preferentially selected. Mean baseline aneurysm morphology included 27.6-mm (range 18–33.4) suprarenal and 28.1-mm (range 24–34) infrarenal neck diameters; the infrarenal neck length was 26 ± 16 mm with angulation of 37° ± 18°. Computed tomographic (CT) angiograms up to 3 years were analyzed using specialized interactive software; migration was defined as >1-cm change in the distance from the lower renal artery to the top of the device. Pre- and postoperative morphological characteristics of the aneurysm were compared between patients with and without migration. Results: Of the 45 patients successfully treated, 40 had complete CT data for analysis. During a mean 17-month follow-up, 7 (17.5%) of the 40 devices exhibited distal migration. Six patients required secondary procedures; 5 were in the migration cohort. No preoperative anatomical characteristic or degree of neck dilatation over time was predictive of stent-graft migration. Aneurysm sac regression was significant at 1 (–0.09 ± 4.90 mm) and 2 (–1.48 ± 2.56 mm) years in endografts without migration (p<0.001). Distal endograft migration >1 cm predicted the need for secondary interventions (p<0.001), with 83% sensitivity and 94% specificity. Conclusions: Endovascular repair is successful in patients with large infrarenal necks and complex neck morphology. Changes in aneurysm remodeling over time were similar to reported observations in patients with more favorable neck criteria. Although no anatomical factor associated with migration could be identified from this analysis, distal displacement >1 cm correlated with the need for a secondary intervention.

scholarly journals Pharmacobotanic characterization of young stems and stem barks of Rauvolfia sellowii Müll. Arg., Apocynaceae

2010 ◽  
Vol 46 (3) ◽  
pp. 555-561 ◽  
Author(s):  
Leopoldo Clemente Baratto ◽  
Márcia do Rocio Duarte ◽  
Cid Aimbiré de Moraes Santos
Keyword(s):  
Plant Material ◽  
Indole Alkaloids ◽  
Stem Bark ◽  
Cortical Region ◽  
Control Parameters ◽  
Calcium Oxalate Crystals ◽  
Anatomical Characteristic ◽  
Quality Control Parameters ◽  
Native Tree

Rauvolfia sellowii Müll. Arg. (Apocynaceae), a Brazilian native tree rich in indole alkaloids, is known as "pau-pra-tudo" and popularly used as hypocholesterolemic, hypoglycemic and antihypertensive. The aim of this work was to study the anatomy of the young stems and stem barks of this medicinal plant, in order to contribute to the identification of the species as a drug. The plant material was fixed and prepared according to standard microtechniques. The young stems have remaining epidermis, but a suberified peridermis is evident. The phellogen is located in the cortical region, forming suber externally. Underneath the phellogen, lies the phelloderm and collenchymatic region. In the cortex, there are numerous laticifers and some fibers. There is an incomplete sclerenchymatic sheath, consisting of several groups of fibers and stone cells. The stem has internal phloem ordered as isolated groups side by side. Numerous laticifers, calcium oxalate crystals, idioblasts and amyloplasts are found in the cortex, phloem, xylem and pith. The stem bark has many layers of suber and cortical parenchyma, a sheath composed of fibers and stone cells totally lignified, and external phloem. These anatomical characteristic, taken together, can be used as quality control parameters for this species.

scholarly journals Abu Ali Hussein Ibn Abdullah Ibn Sina on the classification of physical exercises and their application

2019 ◽  
Vol 7 (6) ◽  
Author(s):  
Sergey Nikitin ◽  
Victoria Barabanova ◽  
Olga Fedotova
Keyword(s):  
Physical Activity ◽  
Physical Condition ◽  
Self Regulation ◽  
Medical Science ◽  
Natural Scientist ◽  
Ibn Sina ◽  
Physical Strength ◽  
Anatomical Characteristic ◽  
Physical Exercises

The article is devoted to the contribution of the famous philosopher, thinker, doctor and natural scientist Abu Ali Hussein Ibn Abdullah Ibn Sina (the Europeanized name Avicenna) in the theory of physical education. The article, based on the analysis of the fundamental work “Canon of Medical Science”, shows the approach of Ibn Sina to the classification of physical exercises. In his theoretical heritage, physical exercises are a means of diagnosing a person’s physical condition, a means of developing his physical strength, maintaining and improving health, and also a means of self-regulation while satisfying a person’s vital needs. The authors of the article proposed a system of criteria for the classification of physical exercises identified by Ibn Sina. According to the criterion “magnitude of physical exertion”, a block is allocated that includes “small and large”, “strong and weak”, and “sluggish” physical exercises. According to the criterion “development of certain physical qualities”, “fast”, “smooth” and “light” physical exercises are distinguished. They correspond to the modern group of speed-strength exercises. According to the anatomical characteristic, "breast exercises". “Exercises for the digestive organs”, “exercises of vision” and “exercises of hearing”, “exercises for teeth and ears” are distinguished. The characteristic of types of physical activity is given, which is the essence of each typological group of physical exercises. The article presents the requirements that Ibn Sina puts forward for the organization of physical exercises, their intensity, time, age and physical condition of a person. It is concluded that the classification of the system of physical exercises of Ibn Sina is internally interfaced with modern classifications of physical exercises. The classification is associated with his own classification and nomenclature of diseases. The description of each disease is accompanied by a recommendation on the use of physical exercises or refusal from the manifestation of physical activity.

scholarly journals Timber Identification in the Taxonomically Challenging Sapotaceae Family

2021 ◽  
Author(s):  
Victor Deklerck ◽  
Erin Price ◽  
Samuel Vanden Abeele ◽  
Kévin Liévens ◽  
Edgard Espinoza ◽  
...  
Keyword(s):  
Species Identification ◽  
Direct Analysis ◽  
Visual Assessment ◽  
Timber Species ◽  
Robust Identification ◽  
Anatomical Characteristic ◽  
Flight Mass Spectrometry ◽  
Box Plots ◽  
Kolmogorov Smirnov ◽  
Timber Trade

Abstract The illegal timber trade is still rampant so robust identification and tracking techniques are necessary to combat this wildlife crime. To follow and enforce timber import laws and adjoining timber species identification, the identity of the botanical species must be well defined. Since the Sapotaceae family is known as a taxonomically challenging family, we focus in this study on the four most valuable Sapotaceae timber species from tropical Africa: Autranella congolensis (De Wild.) A.Chev., Baillonella toxisperma Pierre, Tieghemella africana Pierre and Tieghemella heckelii (A.Chev.) Pierre ex Dubard. The wood anatomical characteristic fiber lumen fraction and Direct Analysis in Real Time – Time of Flight Mass Spectrometry (DART-TOFMS) are used to differentiate between the four species and to make inferences on the species delineation and taxonomic identity. Based on visual assessment of the box-plots for the fiber lumen fraction measurements, two groups can be discerned: (1) A. congolensis and B. toxisperma, and (2) T. africana and T. heckelii. In addition, all Mann-Whitney U comparisons and the differences in underlying distributions (Kolmogorov-Smirnov) for the fiber lumen fraction measurements were significant between all species. However, when permutating the data within those two groups, significant differences were still found. This could indicate that the differences based on the fiber lumen fraction are more nuanced. The DART-TOFMS analysis shows that A. congolensis and B. toxisperma have distinct chemotypes, while T. heckelii and T. africana have remarkably similar chemotypes. Our results provide support for the possibility that T. africana and T. heckelii are more closely related than previously considered. A taxonomic study would be beneficial to assess the species limits of T. heckelii and T. africana, as our results suggest they could be conspecific. This would have important implications towards the timber trade and adjoining timber species identification, for the Tieghemella species, and their conservation.

scholarly journals KARAKTERISTIK MORFOLOGIS DAN ANATOMIS DAUN TUMBUHAN TINGKAT SEMAI PADA PAPARAN CAHAYA BERBEDA DI HUTAN PENDIDIKAN FAKULTAS KEHUTANAN UNIVERSITAS MULAWARMAN

2017 ◽  
Vol 1 (1) ◽  
Author(s):  
Karyati Kasiman ◽  
Dyna Syarofa Ramadhani ◽  
Muhammad Syafrudin
Keyword(s):  
Dominant Species ◽  
Morphological Characteristics ◽  
Vegetation Survey ◽  
Plant Leaves ◽  
Anatomical Characteristics ◽  
Anatomical Characteristic ◽  
Light Intensities ◽  
Seedling Plant ◽  
Study Sites ◽  
Important Value Index

The light intensity influences to morphological and anatomical characteristics of plant leaves in the process of plant growth. The objective of this study was to know morphological and anatomical characteristics of the seedling plant leaves in the different light intensities. The study was conducted in Education Forest of Forestry Faculty of Mulawarman University. The three study sites were selected to represent heavy, moderate, and little light intensities, respectively. The vegetation survey was done in 20 quadrants of 2 m × 2 m in three different light intensities. The analyses of morphological and anatomical characteristics were done to leaves of most five dominant species based on Important Value Index (IVI) in each study site. The morphological characteristics of seedling leaves in heavy, moderate, and little light intensities were leaves length of 13.4 cm, 13.9 cm, and 16.5 cm; leaves wide of 5.0 cm, 5.4 cm, and 6.1 cm, and leaves thick of 0.09 mm; 0.08 mm, and 0.06 mm, respectively. While anatomical characteristic of chlorophyll content of seedling leaves in heavy, moderate, and little light intensities were 45.5%, 46.0%, and 42.7%.

scholarly journals Blood circulation in the lungs: radiologic methods of diagnosing microcirculation changes in the small circle of circulation

2019 ◽  
Vol 18 (1) ◽  
pp. 5-16
Author(s):  
V. I. Amosov ◽  
V. Р. Zolotnitskaia
Keyword(s):  
Blood Circulation ◽  
Lung Diseases ◽  
Structural Changes ◽  
Lung Parenchyma ◽  
Pathological Process ◽  
Anatomical Structures ◽  
Small Circle ◽  
Anatomical Characteristic ◽  
History Of ◽  
Capillary Bed

Radiological diagnosis of diseases of the respiratory system includes a number of methods based on various ways of obtaining information about the state of the chest organs. Most of the applied methods are aimed at identifying structural changes in the lung parenchyma, however, with the development of lung diseases, the pathological process affects all anatomical structures of the lungs, without exception, including the vascular bed of the lungs, primarily due to its microcirculatory level, therefore, this process requires special attention of specialists to the methods detecting changes in the pulmonary microvasculature. Depending on the purposes of the study, various methods of radiologic diagnosis should be used in combination. The review provides a brief anatomical characteristic of the capillary bed of the lungs. History of the study of blood circulation in a small circle is discussed, and modern methods of radiologic research are used to detect lung diseases.

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