scholarly journals ROLE OF WOOD WATER PROPERTIES AND LEAF DYNAMICS IN PHENOLOGY AND RESPONSE TO DROUGHT IN EVERGREEN HIMALAYAN TREE SPECIES

2014 ◽  
Vol 19 ◽  
pp. 71-84
Author(s):  
Kanta Poudyal ◽  
P. K. Jha ◽  
D. B. Zobel

Five evergreen Himalayan trees namely Castanopsis indica, Schima wallichii, Rhododendron arboreum, Quercus lanata and Q. semecarpifolia were studied for their phenological responses to drought. Wood water properties (wood moisture percentage, wood density and water in wood per volume), starch percentage content, specific leaf mass, nitrogen content in leaves and phenological processes such as leaf emergence, senescence, flowering and fruiting were measured. Measurements were taken 28 times from December 1998 to April 2001 except for the monsoon months. There was significant variation in starch percentage in zero and one year old twigs. Mean starch percentage content ranged from 23% and 17.1% (S. wallichii) to 64% and 61.7% (C. indica) in zero year and one year old twig, respectively. Wood water properties were highest in R. arboreum and lowest in C. indica. SLM showed significant variation with sampled species and mean SLM was highest in R arboreum (1.6 × 10-2 g cm-2) and lowest in S. wallichii (0.64 × 10-2 g cm-2). Mean N ranged from 1.13% (R arboreum) to 1.98% (C. indica). Reserved starch percentage and SLM had a strong effect on phenological activities. They increased during the vegetative bud break and leaf emergence and decreased during senescence. Similarly, leaf nitrogen in the studied species was at the crest of concentration during leaf initiation then declined, one in expanded leaves as the concentration became diluted by increasing cell wall material, and the other at the time of senescence by resorption. DOI: http://dx.doi.org/10.3126/eco.v19i0.9857Ecoprint An International Journal of Ecology Vol. 19, 2012 Page: 71-84 Uploaded date: 2/14/2014 

1992 ◽  
Vol 22 (3) ◽  
pp. 1-13
Author(s):  
Stephen Bell ◽  
Glen A. Jones

A survey of faculty participation in paid consulting arrangements in Ontario Colleges of Applied Arts and Technology reveals that 34% were involved in at least one project during a specified one-year period. There was significant variation in participation by division of academic appointment and by gender. The authors suggest that further research should be undertaken concerning the nature and role of paid consulting in community colleges. A number of basic questions are raised in an attempt to induce further study on this important topic.


2017 ◽  
Vol 24 ◽  
pp. 29-36
Author(s):  
Deepak B. Chand ◽  
Kanta Poudyal ◽  
P. K. Jha

An investigation has been done with the three Himalayan oak species at Phulchowki Hill Lalitpur Nepal to relate leaf phenology responses of trees to wood water properties. We recorded the wood water content, wood density, water in wood and leaf phenological patterns of three evergreen oak species (Quercus semecarpifolia, Quercus lamellosa and Quercus glauca) for 2 years. Our results revealed significant changes in leaf phenology within oak species between years, with shifts in leaf emergence, leaf damage and leaf senescence. Shifts in tree leaf phenology found in studied years suggest that the inter-annual and monthly variation in wood water properties could attribute to shift in tree leaf phenology.ECOPRINT 24: 29-36, 2017


2020 ◽  
Vol 35 (Supplement_3) ◽  
Author(s):  
Bernard Hory ◽  
Christophe Robino

Abstract Background and Aims The role of adipocytokines (ADCK), and particularly of anorectic leptin and of resistin in the mortality of PEW is strongly suspected. Convective techniques (ol-HDF) decrease leptin concentrations but induce a concomitant albumin loss which could be potentially harmful in malnourished patients. The aim of the prospective multicentric randomized study performed in France by the NUTRIPEPA GROUP is to compare one year evolution of 4 ADCK and seric albumin using HDF or HD and membranes with different cut-off. Method 47 patients responding to both criteria of albumin <35 g/l (mean of 3 dosages) and prognostic inflammatory and nutritional index (PINI)≥ 1 were randomized to be treated using either polyester polyarylate (PEPA Nikkiso Japan) or polysufone, polyethersulfone dialyser (control) and followed for one year. Treatment consists in 3*4 hours HD session or in 3 HDF sessions with more than 20 liters reinjection/session. 24 patients were treated with HDF (HDF gr) : 11 with PEPA, 13 with control, and 23 with HD (HD gr) : 13 with PEPA, 10 with control. Oral nutritional supplementation was systematic, eventually completed by intradialytic parenteral nutrition. Albumin, leptin, adiponectin, ghrelin and resistin concentrations were determined at M0, M6, M9, M12. Delta concentration M0-M12 of albumin and of the 4 ADCK were compared with Wilcoxon test. Results At 12 months, decrease of leptin and of resistin was significantly higher in HDF group compare to HD group. There was no significant variation of adiponectin, ghrelin and albumin concentrations regardless of the technic or of dialyser cut-off. Conclusion In PEW, on a one year practice and regardless of the cut-off of the dialyser, HDF decreases both the anorexigenic adipokine leptin and resistin, adipokine implicated in insulin resistance, without harmfull incidence on seric albumin concentration. The decrease of concentrations of leptin and resistin obtained using ol-HDF could explain, at least in part, the reduction of one year mortality that we reported last year in preliminary results of NUTRIPEPA study.


WCET Journal ◽  
2019 ◽  
Vol 39 (2) ◽  
pp. 9-18
Author(s):  
Wai Sze Ho ◽  
Wai Kuen Lee ◽  
Ka Kay Chan ◽  
Choi Ching Fong

Objectives The aim of this study was to retrospectively review the effectiveness of negative pressure wound therapy (NPWT) in sternal wound healing with the use of the validated Bates-Jensen Wound Assessment Tool (BWAT), and explore the role of NPWT over sternal wounds and future treatment pathways. Methods Data was gathered from patients' medical records and the institution's database clinical management system. Seventeen subjects, who had undergone cardiothoracic surgeries and subsequently consulted the wound care team in one year were reviewed. Fourteen of them were included in the analysis. Healing improvement of each sternal wound under continuous NPWT and continuous conventional dressings was studied. In total, 23 continuous NPWT and 13 conventional dressing episodes were analysed with the BWAT. Results Among conventional dressing episodes, sternal wound improvement was 2.5–3% over 10 days to 3.5 weeks, whereas 4–5% sternal healing was achieved in 5 days to 2 weeks with sternal wire presence. Better healing at 11% in 1 week by conventional dressing was attained after sternal wire removal. In NPWT episodes, 8–29%, 13–24%, and 15–46% of healing was observed in 2 weeks, 3.5 to 5 weeks and 6 to 7 weeks, respectively. Only 39% wound healing was acquired at the 13th week of NPWT in one subject. With sternal wire present, 6%–29% wound healing progress was achieved by NPWT in 1–4 weeks, and 16–23% wound improvement in 2 to 4.5 weeks by NWPT after further surgical debridement. After sternal wire removal, 6–34% sternal wound healing occurred by continuous NPWT for 1–2 weeks, and maximum healing at 46% after 2.5 weeks of NPWT were observed. Conclusions Better wound healing was achieved in the NPWT group in comparison to conventional dressings alone. However, suboptimal sternal wound healing by NPWT alone was observed. Removal of sternal wire may improve the effectiveness of NPWT. Successful tertiary closure after NPWT among subjects supports the important bridging role of NPWT in sternal wound healing. Factors causing stagnant sternal wound healing by NPWT alone are discussed.


1968 ◽  
Vol 58 (3) ◽  
pp. 364-376 ◽  
Author(s):  
S. Pesonen ◽  
M. Ikonen ◽  
B-J. Procopé ◽  
A. Saure

ABSTRACT The ovaries of ten patients, at least one year after the post-menopause, were incubated with two Δ5-C19-steroids and also studied histochemically. All these patients had post-menopausal uterine bleeding and increased oestrogen excretion of the urine. The urinary estimations of gonadotrophins, 17-KS, 17-OHCS and pregnanediol were carried out on all patients. Vaginal smears were read according to Papanicolaou, and the endometrium and ovaries were studied histologically. The incubation experiments indicate the presence of Δ5-3β-hydroxysteroid-dehydrogenase. When androst-5-ene-3β,17β-diol was used as precursor the formation of testosterone occurred without any concomitant production of DHA and/or androstenedione. This seems to indicate the possible role of the Δ5-pathway in the formation of testosterone by post-menopausal ovarian tissue. The histochemical reactions indicated a reducing activity on NADH, lactate and glucose-6-phosphate, in certain corpora albicantia, atretic follicles and in diffuse thecoma regions in the cortical layer of the ovary. Steroid-3β-ol-dehydrogenase and β-hydroxybutyrate-dehydrogenase were found only at the edges of certain corpora albicantia, in some individual stroma cell groups and in some atretic follicles. Our studies, both biochemical and histochemical, suggest that the observed increase in the urinary oestrogens of the patients studied might in part at least, be of ovarian origin. This opinion is also supported by the postoperative oestrogen values.


2012 ◽  
Vol 2 (2) ◽  
pp. 345-350
Author(s):  
Dr. Girish.L Dandagi ◽  
◽  
Venkat kalyana kumar. P ◽  
Dr. Dr.Isaac Mathew ◽  
Dr. Dr.G S Gaude Dr. Dr.G S Gaude

2019 ◽  
pp. 58-62
Author(s):  
Vlad Stegariu ◽  
Simona Andreea Popușoi ◽  
Beatrice Abălașei ◽  
Nicolae Lucian Voinea ◽  
Ioan Stelescu ◽  
...  

Chess playing has a significant role in participants’ resources allocation, both at a psychological level, but mostly concerning the cognitive resources. The aim of the present study was to examine the effect of chess playing on the intellectual development of primary-class students. 67 children were tested using the Raven Standard Progressive Matrices and were distributed in three different groups according to their experience with chess, namely: the control group (formed by students with no experience with chess playing), the beginners group (students with less than one year in chess playing training) and the advanced group (children with more than two years experience with chess). Results indicated that chess playing had a significant effect on the SPM performance, indicating that those in the advanced group performed significantly better than those in the control or in the beginners group. Conclusions of this study tap into the benefits of playing chess with a focus on the children’s’ cognitive development.


2020 ◽  
Vol 17 (1) ◽  
pp. 28-37
Author(s):  
Tabinda Sattar

Background: Selenium is a micronutrient, although required in low amounts, its importance in male and female reproduction is well known. Objectives: The core purpose of this study is to evaluate the role of selenium in human reproduction, during pregnancy/ lactation in women and newborns. The review explains side by side the sources of selenium, required amounts of selenium in humans and during pregnancy or lactation. Methods: Selenium deficiency is a major cause of male infertility. Similarly, selenium deficiency, both in pregnant and postpartum women, would greatly affect the health of the newborn baby in all respects. The effect of maternal selenium upon the fetus and the neonates even one year after birth has been explained with some recent examples. Results: The study elaborates the fact that the selenium deficiency in pregnancy and lactation is common due to fetal/infant development, so selenium supplements must be provided in order to overcome these deficiency symptoms. Conclusions: The better reproductive health in humans is possible due to the sufficient amounts of selenium present both in males and females as well.


Author(s):  
Domenico Albano ◽  
Francesco Dondi ◽  
Valentina Zilioli ◽  
Maria Beatrice Panarotto ◽  
Alessandro Galani ◽  
...  

Abstract Objective The baseline treatment of differentiated thyroid cancer (DTC) consists of thyroidectomy followed by postoperative risk-adapted radioiodine therapy (RAIT) when indicated. The choice of most appropriate RAI activities to administer with the aim to reach an efficient remnant ablation and reduce the risk of recurrence is yet an open issue and the detection of basal factors that may predict treatment response seems fundamental. The aim of this study was to investigate the potential role of Hashimoto thyroiditis (HT) in predicting 1-year and 5-year treatment response after RAIT and prognosis. Methods We retrospectively included 314 consecutive patients (174 low-risk and 140 intermediate-risk) who received thyroidectomy plus RAIT. One-year and 5-year disease status was evaluated according to 2015 ATA categories response based upon biochemical and structural findings. Results HT was reported histopathologically in 120 patients (38%). DTC patients with concomitant HT received a higher number of RAITs and cumulative RAI activities. Initial RAIT reached an excellent response in 63% after one year and 84% after 5 years. The rate of excellent response one year and 5-year after first RAIT was significantly lower in HT groups, compared to not HT (p < 0.001). Instead, HT did not have a prognostic role considering PFS and OS; while stimulate thyroglobulin (sTg) at ablation was significantly related to survival. Conclusions HT may affect the efficacy of RAIT in low to intermediate risk DTC, particularly reducing the successful rate of excellent response after RAIT. Instead, HT did not have a prognostic impact such as stimulated sTg.


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