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Journal articles on the topic "610.1/4"
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Wang, Jiasheng, Yongxian Hu, Yanlei Zhang, Guoqing Wei, Huijun Xu, Wenjun Wu, Shaohui Liu, et al. "Quantification of Non-Hodgkin Lymphoma Disease Burden Using FDG PET-CT Helps Predict the Severity of Cytokine Release Syndrome." Blood 132, Supplement 1 (November 29, 2018): 2997. http://dx.doi.org/10.1182/blood-2018-99-117983.
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Abstract Background: CD19-targeting chimeric antigen receptor (CAR) T-cell therapy has shown great efficacy in patients with refractory/relapsed non-Hodgkin lymphoma (NHL), but was associated with serious adverse effects such as cytokine release syndrome (CRS). It has been speculated that NHL baseline disease burden might affect clinical outcome and CRS, but such assumption has not been explored in detail in previous studies. Metabolic tumor volume (MTV) and total lesion glycolysis (TLG), calculated using FDG PET-CT, are quantitative indicators of baseline tumor burden. Methods: Utilizing FDG PET-CT, we calculated MTV and TLG at baseline and post CAR T-cell therapy in 15 patients with NHL. Results: Among all the patients, the median MTV was 72 (range 0.02-3024.9) cm3 and the median TLG was 610.1 (range 0.011-13156.3). After a median follow-up of 6 months, the overall response rate (ORR) was 66.7% (95% CI 38.4-88.2%). The baseline MTV and TLG did not have significant difference in patients with or without response (p=0.271 and 0.95, respectively). Cox-regression analysis did not find lower baseline MTV and TLG significantly associated with better overall survival (p=0.67 and 0.45, respectively). Patients with mild and moderate CRS (defined as Grade 0-2) had significantly lower MTV and TLG than those with severe CRS (Grade 3, 4) (median MTV: 49.3 v.s. 1137.7 cm3, p=0.012; median TLG: 379.1 v.s. 9384, p=0.012, Figure A, B). The median MTV in patients received tocilizumab, an IL-6 antagonist for the treatment of severe CRS, was 963.4 cm3, which was significantly higher than the patients not receiving tocilizumab (58.1 cm3, p=0.037). The median TLG in patients received tocilizumab was 9187.1, compared with 610.1 in patients not receiving tocilizumab (p=0.053). Using FDG PET-CT, we also demonstrated that CAR T-cell therapy in NHL patients could associate with severe local complications such as local compression and local inflammation. Conclusions: Low NHL baseline disease burden is not associated with better response rate or long-term outcome. Patients with higher baseline disease burden have more severe CRS Figure. Figure. Disclosures No relevant conflicts of interest to declare.
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Adeniji, Folashayo. "Burden of out-of-pocket payments among patients with cardiovascular disease in public and private hospitals in Ibadan, South West, Nigeria: a cross-sectional study." BMJ Open 11, no. 6 (June 2021): e044044. http://dx.doi.org/10.1136/bmjopen-2020-044044.
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ObjectiveGiven that the mechanism for financial protection is underdeveloped in Nigeria, out-of-pocket (OOP) payment for treating cardiovascular disease could impose substantial financial burden on individuals and their families. This study estimated the burden of OOP expenditures incurred by a cohort of patients with cardiovascular disease (CVD) in Ibadan, Nigeria.Design and settingsThis study used a descriptive cross-sectional study design. A standardised survey questionnaire originally developed by Initiative for Cardiovascular Health Research in Developing Countries was used to electronically collect data from all the 744 patients with CVD who accessed healthcare between 4 November 2019 and 31 January 2020 in the cardiology departments of private and public hospitals in Ibadan, Nigeria. Baseline characteristics of respondents were presented using percentages and proportions. The OOP payments were reported as means±SDs. Costs/OOP payments were in Nigerian Naira (NGN). The average US dollar to NGN at the time of data collection was ₦362.12 per $1. All quantitative data were analysed using STATA V.15.Outcome measuresThe burden of outpatient, inpatient and rehabilitative care OOP payments.ResultsMajority of the patients with CVD were within the age range of 45–74 years and 68.55% of them were women. The diagnostic conditions reported among patients with CVD were hypertensive heart failure (84.01%), dilated cardiomyopathy (4.44%), ischaemic heart disease (3.9%) and anaemic heart failure (2.15%). Across all the hospital facilities, the annual direct and indirect outpatient costs were ₦421 595.7±₦855 962.0 ($1164.2±$2363.8) and ₦19 146.5±₦53 610.1 ($52.87±$148.05). Similarly, the average direct and indirect OOP payments per hospitalisation across all facilities were ₦182 302.4±₦249 090.4 ($503.43±$687.87) and ₦14 700.8±₦ 69 297.1 ($40.60±$191.37), respectively. The average rehabilitative cost after discharge from index hospitalisation was ₦30 012.0 ($82.88).ConclusionThe burden of OOP payment among patients with CVD is enormous. There is a need to increase efforts to achieve universal health coverage in Nigeria.
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Wang, Heng Long, Chin Wei Tu, Wei Zhi Wu, Chen Yi Lin, Su Yu Chen, Wen Jen Yang, Jer Chia Chang, Mei Kuang Lu, and Wei Tung Liao. "Isolation a Homogalacturonan from the Outer Seed Coat of Shaddock (Citrus grandis Osbeck)." Natural Product Communications 13, no. 6 (June 2018): 1934578X1801300. http://dx.doi.org/10.1177/1934578x1801300625.
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An acidic mucilage was isolated from the outer-layer seed coat of shaddock (Citrus grandis Osbeck) by water extraction at room temperature, and purified by DE-52 anion-exchange chromatography using 0.26 – 0.37 M NaCl. This purified mucilage was almost entirely composed of galacturonic acid residues. Glycosyl-linkage analysis showed that the backbone was 1→4 linked. Fourier Transform Infrared Spectroscopic analysis and determination of the degree of methylation further revealed that the mucilage was a low-degree (11.94%) esterified homogalacturonan. Size exclusion chromatography showed that the major molecular weight distribution of 610.9 kDa.
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Ter-Minassian, Monica, Brinda Somasundaram, and Kala Visvanathan. "Abstract P2-11-12: Benign breast disease and breast malignancy." Cancer Research 82, no. 4_Supplement (February 15, 2022): P2–11–12—P2–11–12. http://dx.doi.org/10.1158/1538-7445.sabcs21-p2-11-12.
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Abstract Introduction: Women with specific types of benign breast disease (BBD) are at higher than average risk for breast cancer. Non-proliferative BBD are at lower risk (1.3-2, compared to women without BBD), proliferative without atypia (1.8), and atypical proliferative such as atypical hyperplasia (AH) and lobular carcinoma in situ (LCIS) are at highest risk (2.5-4). We sought to categorize BBD subtypes for inclusion in a study to evaluate follow up screening and preventative care provided in a real world setting, by leveraging electronic health record and claims databases with refined diagnosis coding. Methods: We used the Kaiser Permanente Mid-Atlantic States (KPMAS) Research Data Warehouse (RDW), capturing claims and encounter data, to search for BBD among female patients with diagnosis dates from 1-1-2004 to 1-04-2020 and with at least 30 days of membership during the study period. We first selected patients with ICD-9 codes (217, 233, 610.8, 610.9), ICD-10 (D05.00-02, D05.81-82, D05.90, D24.1-2, D24.9, N60.81-2, N60.89, N60.91-2, N60.99, N62, N64.89). Filtering on IDs that capture standard diagnosis names, we included the diagnoses: benign neoplasm, intraductal papilloma, phyllodes tumor, ductal and stromal hyperplasias, dysplasia, atypical ductal and lobular hyperplasias (ADH, ALH), LCIS, and excluded fibroadenoma, sebaceous cysts, and non-specific carcinoma in situ. We calculated the time between malignant disease (DCIS or breast cancer) and the earliest BBD diagnosis in intervals: prior malignancy 31 or more days before BBD, concurrent malignancy within 30 days prior or after, and developed malignancy 31 or more days after BBD. We calculated overall survival after BC diagnosis, censored at Jan. 4, 2020. Results: We included 8670 unique patients with increased risk BBD subtypes, aged 12-93 years (median 52) at diagnosis. Patients self-reported race/ethnicity as Black (37.5%), White (28%), Asian (6%), Hispanic (1.6%), other (0.6%) and missing/unknown (25%). BBD diagnoses were first reported usually by the department of Surgery (35%), and Pathology (20%): other reporting departments include Hospitals, Radiology, Breast Health, Primary care, Ob/Gyn, and other or missing departments. Patients had more than one diagnosis: 47% benign neoplasm, 30.4% LCIS/DCIS, 12.5% intraductal papilloma, 12.9% ADH, 4% LCIS, 1.9% ALH, and the remainder with dysplasia, and phyllodes tumor or stromal hyperplasias. The benign neoplasm diagnosis was reported in 37% without another more specific diagnosis. Sixty percent, 5205 patients had no history of DCIS or BC at the time of BBD diagnosis. There were 1895 patients with DCIS (26.8% prior, 45.1% concurrent and 28.1% developed after BBD) and 3886 with BC (42.1% prior, 41.8% concurrent and 16.1% developed after BBD). For those with a breast cancer diagnosis, five-year overall survival after BC was 93%, with 649 (16.7%) deaths, median follow-up time of 6.7 yrs. Conclusion: Identifying specific BBD from the EHR can be accomplished with ICD codes and filtering on diagnosis IDs. Those with malignant disease were often diagnosed prior to or concurrent with benign disease. Citation Format: Monica Ter-Minassian, Brinda Somasundaram, Kala Visvanathan. Benign breast disease and breast malignancy [abstract]. In: Proceedings of the 2021 San Antonio Breast Cancer Symposium; 2021 Dec 7-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2022;82(4 Suppl):Abstract nr P2-11-12.
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Song, Xiaoyue, Qing Qin, Shufu Chang, Rende Xu, Mingqiang Fu, Hao Lu, Lei Ge, Juying Qian, Jianying Ma, and Junbo Ge. "Clinical Outcomes of Self-Made Polyurethane-Covered Stent Implantation for the Treatment of Coronary Artery Perforations." Journal of Interventional Cardiology 2021 (May 17, 2021): 1–9. http://dx.doi.org/10.1155/2021/6661763.
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Objectives. The present study aimed to investigate the short- and long-term clinical outcomes of self-made polyurethane-covered stents (PU-CS) in patients for the management of coronary artery perforation (CAP) during percutaneous coronary intervention (PCI). Background. Coronary artery perforation is reckoned as a serious complication in PCI and associated with considerable morbidity and mortality. Covered stents have been used for treating the life-threatening CAP during PCI. But in some catheterization laboratories, no commercial CS is immediately available when there is an urgent need for CS to rescue the coronary rupture site. Methods. We retrospectively identified 24 patients who underwent 31 self-made PU-CS implantations due to CAP in Zhongshan Hospital, Fudan University, from June 2015 to January 2020. Results. The total procedural success rate of CS to seal the perforation was 79.2%. Nine patients (37.5%) developed cardiac tamponade, of which 8 patients (33.3%) underwent pericardiocentesis and 4 patients (16.7%) underwent cardiac surgeries. Except for 4 cardiac death cases (16.7%), none of myocardial infarction (MI), target lesion revascularization (TLR), and stent thrombosis (ST) was reported during hospital stay. Data from 22 patients (91.7%) were available at 610.4 ± 420.9 days of follow-up. Major adverse cardiac events (MACE) occurred in 6 patients (27.3%), including 5 cases of cardiac death and one TLR case. Conclusions. Self-made PU-CS demonstrates high rates of successful delivery and sealing of severe CAP during PCI. Although the in-hospital mortality remains high after PU-CS implantation, the long-term follow-up shows favorable clinical outcomes, indicating the feasibility of PU-CS in treating CAP.
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Gómez-Gallego, Carlos, Himanshu Kumar, Izaskun García-Mantrana, Elloise du Toit, Jukka-Pekka Suomela, Kaisa M. Linderborg, Yumei Zhang, et al. "Breast Milk Polyamines and Microbiota Interactions: Impact of Mode of Delivery and Geographical Location." Annals of Nutrition and Metabolism 70, no. 3 (2017): 184–90. http://dx.doi.org/10.1159/000457134.
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Background/Aims: The aim of the present study was to identify and quantify the polyamine levels in human milk obtained from different countries and through different modes of delivery, and to investigate their association with breast milk microbes. Methods: Mature breast milk samples were obtained from 78 healthy mothers after 1 month of lactation from 4 different geographical locations: Finland, Spain (Europe); South Africa (Africa); and China (Asia). Polyamines were determined using HPLC after dansyl derivatization and milk microbiota was obtained by 16S rRNA gene sequencing. Results: The mean values of polyamines in breast milk were 70.0, 424.2, and 610.0 nmol/dL for putrescine, spermidine and spermine, respectively, and 1,170.9 nmol/dL of total polyamines. The levels of putrescine were significantly higher in Spain (p < 0.05) and spermidine levels were significantly higher in Finland (p < 0.05) compared with other countries. Cesarean delivery had an impact on polyamine levels and it was related to an increase in the putrescine concentration being significant in Spanish samples (p < 0.01). Furthermore, putrescine levels were correlated positively with Gammaproteobacteria (r = 0.46, p < 0.001), especially with Pseudomonas fragi (r = 0.40, p < 0.001). Conclusions: The results demonstrate significant effect of geographical variations in human milk polyamine concentrations, being correlated with human milk microbiota composition. These differences may have an impact on infant development during lactation.
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Nur Rosyid, Fahrun, Edi Dharmana, Ari Suwondo, K. Heri Nugroho HS, and Sugiarto Sugiarto. "The Effect of Bitter Melon (Momordica charantia L.) Leaves Extract on TNF-α Serum Levels and Diabetic Foot Ulcers Improvement : Randomized Controlled Trial." Biomedical and Pharmacology Journal 11, no. 3 (September 4, 2018): 1413–21. http://dx.doi.org/10.13005/bpj/1505.
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Diabetic foot ulcer (DFU) is among the many complications of diabetes and it takes a very long period of time to heal. It can lead to the amputation of the lower limb, thereby resulting to death or in most cases, a bad quality of life. The aim and objective of this study is to assess the effect of bitter melon leaves extracts on serum TNF-α levels and improvement of diabetic foot ulcers. The study technique used here is the randomized, double-blinded, placebo-controlled trial. Thirty patients suffering from DFU participated in the trial and according to PEDIS scores were divided into two groups, of which 15 patients were in the treatment group and administered with bitter melon leaves extract at a dose of 6 g/day and the remaining 15 patients were in the control group and were given placebo. This intervention was done for 4 weeks and the examination of serum TNF-α levels was carried out at baseline and at the end of treatment. The readings of the healing process for diabetic foot ulcers with PEDIS scores were also taken at baseline, weeks 2, 3 and 4. Data were analyzed using the paired t-test and the independent t test. After 4 weeks of treatment, there was a decrease in baseline serum TNF-α levels in the treatment and control groups (29.5 ± 8.6 pg/ml, P = 0.0001 and 202.5 ± 610.2 pg/ml, P = 0.001). There was no effect on serum TNF-α levels (P = 0.28). There was a decrease in PEDIS degrees from baseline, week 2, 3 and 4 in the treatment and control groups (2.7±0.5; 2.7±0.5; 2.7±0.6; 1.9±0.6 and 2.6±0.5; 2.6±0.5; 2.5±0.6; 2.2±0.8). However there was no effect on diabetic foot ulcer improvement both groups in week 2 (P = 0.46), week 3 (P = 0.57) and week 4 (P = 0.29). Bitter melon leaves extracts is proven to have no effect on the serum TNF-α levels and improvement of diabetic foot ulcers.
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Bhattarai, Amit Sharma, Gentle Sunder Shrestha, Megha Koirala, Pramesh Sunder Shrestha, and Moda Nath Marhatta. "Evaluation of the Effects of Ultra-Low Dose Naloxone on Brachial Plexus Block with Bupivacaine." Birat Journal of Health Sciences 6, no. 1 (June 14, 2021): 1373–76. http://dx.doi.org/10.3126/bjhs.v6i1.37640.
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Introduction: Adjuvants are used in conjunction with local anaesthetics for brachial plexus block to quicken onset, prolong duration and augment the quality of anaesthesia.
Objectives: The study aims to evaluate the effect of adding ultra-low dose naloxone to bupivacaine on the duration of postoperative analgesia.
Methodology: A prospective, randomized, double-blind study was conducted including forty American Society of Anesthesiologists Physical Status (ASA PS) I and II patients of either sex between 15 and 65 years of age scheduled for upper limb surgery. They were randomized into two groups. Group BN received a mixture of 0.33% plain bupivacaine with ultra-low dose naloxone (100 ng) and group BS received 0.33% plain bupivacaine with saline. The procedure was standardized in both groups. The onset of sensory and motor block were assessed with pinprick sensation and muscle power respectively. Visual Analogue Score (VAS) was used to assess the pain at 1, 2, 4, 8 and 12 hours postoperatively.
Result: The patients were comparable with respect to age, sex, ASA PS, baseline hemodynamic and respiratory parameters and duration of surgery. The mean duration of analgesia in group BN was significantly longer (610.7±125.4 mins) as compared to group BS (354.3±59.6 mins) (p<0.001). No complications were noted in both the groups.
Conclusion: This study demonstrated that 100 ng naloxone, when used with 0.33% plain bupivacaine for supraclavicular brachial plexus block, prolongs postoperative analgesia significantly after upper limb surgeries, without any significant side effects.
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Cherevko, Oleksander, Valeriy Mikhaylov, Andrii Zahorulko, Aleksey Zagorulko, and Irina Gordienko. "Development of a thermal-radiation single-drum roll dryer for concentrated food stuff." Eastern-European Journal of Enterprise Technologies 1, no. 11 (109) (February 27, 2021): 25–32. http://dx.doi.org/10.15587/1729-4061.2021.224990.
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The design of a thermal-radiation single-drum roll dryer with a combined method of heat supply, application and cutting of the dried layer of raw materials was developed. The dryer allows obtaining a powder fraction of a semi-finished product with a solids content of 3...5 %. Such a design solution will make it possible to obtain a high-quality semi-finished product due to low-temperature drying.
The effective viscosity of the studied pastes produced by blending apple, sea buckthorn, black chokeberry, beet and pumpkin purees was determined. Adding different percentages of raw materials to apple paste increases the effective viscosity by 9...18 %. According to the results of the organoleptic evaluation, the sample with the following composition turned out to be the best: apple – 30 %, sea buckthorn – 20 %, black chokeberry – 15 %, beet – 15 % and pumpkin – 20 %. The drying time of the blended paste with a solids content of 45 % at a temperature of 65 °C and different layer thicknesses of application to the working surface (8, 6 and 4 mm) is 75, 60 and 56 min, respectively.
All the samples of pastes have a reddish-purple color with a wavelength of 610.5...614.5 nm and a tone purity of 66.5...78.8 %. The wavelength of the dried fraction is 495...615.3 nm with a tone purity of 34.3...34.8 %, from bluish-red to bluish-purple. The brightness of the samples after drying decreases within 3...4 %. The obtained color change values and drying time of the samples confirm the possibility of using the improved dryer to obtain high-quality vegetable semi-finished products of the dried fraction. The experimental data will be useful in design calculations and testing of the developed dryer in order to obtain its maximum efficiency
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Khairi, Hilmy, Muhammad Burhannudinnur, and Firman Herdiansyah. "Carbonate Reservoir Characterization Based on Rock Type Analysis in Minahaki Formation and Tomori Formation, "HK" Field, Banggai Basin." IOP Conference Series: Earth and Environmental Science 1104, no. 1 (November 1, 2022): 012037. http://dx.doi.org/10.1088/1755-1315/1104/1/012037.
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Abstract The research area is located in the Banggai Basin, Central Sulawesi, which part of the Eastern Arm of Sulawesi Island that originated from the collision between Banggai - Sula Microcontinent and West Arm Volcanic Arc from Sulawesi Island. This research has reservoir target in Minahaki Formation and Tomori Formation those are carbonate rocks. The problem limitation of this research is to characterize carbonate reservoir based on the distribution of rock types. The intention of this research is to analyze carbonate reservoirs with petrophysical properties and analyze reservoir characterization based on rock type distribution, while the purpose is determine the petrophysical property values of the Minahaki Formation and Tomori Formation, then determine the distribution of rock types for characterizing the reservoir rocks. The research methods begin with literature study, data collection, and data analysis. The results of the petrophysical analysis and pay zone in Minahaki Formation obtained an average: net pay thickness is 359.5 feet – 398.5 feet, vshale 23.55% - 34.48%, PHIT 13.33% - 22.84%, PHIE 9.9% - 16.89%, Sw 61.23% - 76.95%, and permeability 610.5 mD – 1360.1 mD. Meanwhile, Tomori Formation obtained an average: net pay thickness is 52.5 feet – 679 feet, vshale 16.53% - 34.7%, PHIT 3.5% - 7.87%, PHIE 2.77% - 6.09%, Sw 26.01% - 42.97%, and permeability 39 mD – 161.9 mD. There are six rock type distribution in the research area those are rock type 1 is ≤ 0.245 micrometers, rock type 2 is 0.314 – 0.48 micrometers, rock type 3 is 0.5 – 0.965 micrometers, rock type 4 is 1.04 – 2.35 micrometers, rock type 5 is 2.36 – 15.08 micrometers, and rock type 6 is 19.66 – 78.82 micrometers.
Books on the topic "610.1/4"
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Medical Terminology Systems: A Body Systems Approach. F.A. Davis Company, 2017.
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Medical Terminology Systems: A Body Systems Approach. F.A. Davis Company, 2017.
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Medical Terminology: An Illustrated Guide. Brand: Lippincott Williams Wilkins, 2013.
Find full textConference papers on the topic "610.1/4"
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Abdurashytov, S. F., E. V. Puzanova, K. S. Gritsevich, A. A. Zubochenko, and V. K. Zakharova. "Study of the development of arbuscular mycorrhizal fungi in the saline soils of Crimea." In РАЦИОНАЛЬНОЕ ИСПОЛЬЗОВАНИЕ ПРИРОДНЫХ РЕСУРСОВ В АГРОЦЕНОЗАХ. Federal State Budget Scientific Institution “Research Institute of Agriculture of Crimea”, 2020. http://dx.doi.org/10.33952/2542-0720-15.05.2020.25.
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It is known that arbuscular mycorrhiza (AM) fungi are able to mitigate the effect of various negative environmental factors on plants. Therefore, the aim of our research was to determine the most active AM fungi populations in saline soils of the Crimean Peninsula to select stress-resistant isolates. The spores were isolated by wet sieving. Mycorrhization was visualized by staining with black ink and studied quantitatively under a stereomicroscope. In 2019, 15 soil-plant samples from 4 locations of the salinity soils were sampled: Lake Achi (AB) and the nearby agrocenosis (PAB), Koyashskoye (KO), Kirkoyashskoye (PKP) and agrocenosis near it (KP), Chokrak (CH). The highest content of chlorine anions (119.5 mg) and bicarbonate anions (610.0 mg) was noted in the area near Lake Kirkoyashskoye. The smallest salinity was observed at arable land KP (8.5 and 229.0 mg). Plowing led to a decrease in the number of AM fungi spores in the studied sections of PAB by 80.3% and KP by 47.6% compared with the AB and PKP. The frequency of occurrence and the intensity of mycorrhizal colonization in plant roots on the shores of Lakes Achi and Kirkoyashskoye were 70.0-72.3% and 28.0-43.9%, while the same for the plowing areas around them were lower by 28.5-54.1% and 18.0-32.2%, respectively. In our study, there was no strict correlation between the number of spores and the estimated environmental conditions. Soil-plant samples and the spores isolated from them were used as inoculums for obtaining new AM fungal isolates with a stress resistance property.
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Карпов, М. В. "Изменение функциональных признаков листьев лесных растений в различных условиях произрастания." In III молодёжная всероссийская научная конференция с международным участием «PLANTAE & FUNGI». Botanical Garden-Institute FEB RAS, 2023. http://dx.doi.org/10.17581/paf2023.23.
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Удельная площадь листьев (SLA) и содержание хлорофилла (Chl) относятся к наиболее физиологически значимым признакам растений, что обуславливает интерес к их изучению. Целью данной работы было рассмотреть внутривидовую и межвидовую изменчивость удельной площади листа и содержания хлорофилла и взаимосвязь этих признаков у сосудистых растений травянисто-кустарничкового яруса лесных сообществ. Исследование проводилось на территории ООПТ (Раифский участок ВКГПБЗ), участкового лесничества (Айшинское) и природного парка «Лебяжье», г. Казань. Всего было заложено 16 пробных площадок площадью 400 м2 на территории участков леса, относящихся к зеленомошным и сфагновым соснякам, хвойно-широколиственным лесам и широколиственным лесам. Измерение содержания хлорофилла производилось с помощью хлорофиллометра Konica Minolta SPAD-502 plus. Пересчёт значений SPAD в единицы удельного содержания хлорофилла осуществлялся при помощи уравнения: Chl (мкг/см2) = (99*SPAD)/(144-SPAD) [1]. Всего было исследовано 36 травянистых и кустарничковых видов. По результатам исследования было выявлено: 1. Средневзвешенные по сообществу значения SLA и Chl составляют 353.2 см2/г и 25 мкг/см2 соответственно в широколиственных лесах, 417.9 см2/г и 28.8 мкг/см2 в хвойно-широколиственных лесах, 232.8 см2/г и 24.4 мкг/см2 в зеленомошных сосняках и 81.7 см2/г и 53.7 мкг/см2 в сфагновых сосняках. 2. Анализ на основе шкал Цыганова показывает, что SLA возрастает при уменьшении освещенности, увеличении влажности и азотного богатства почв. 3. При оценке связи между средними для видов значениями показателями SLA и Chl была выявлена статистически значимая обратная корреляция (-0.55). Для растений одного вида в пределах одного местообитания в 58% процентах случаев наблюдается умеренная обратная корреляция Chl и SLA (от -0.2 до -0.5), в 27% случаев корреляция не выражена (от -0.2 до 0.2). При анализе взаимосвязи значений SLA и Chl растений одного вида с различных площадок исследования отмечается как положительная (для брусники (0.22), ландыша (0.33), сныти (0.59)), так и отрицательная (для черники (-0.27) и пролесника (- 0. 61)) корреляция. 4. Эдификаторные растения, типичные как для хвойных, так и для широколиственных лесов, в экотонных смешанных типах леса имеют в 1.5-2.5 раза значимо более высокие значения SLA: пролесник многолетний (370.9 см2/г и 688.6 см2/г), копытень (284.2 см2/г и 448.7 см2/г), черника (222.3 см2/г и 610.8 см2/г), костяника (429.5 см2/г и 639.8 см2/г), ландыш (245.1 см2/г и 383.4 см2/г). 5. Для большинства видов внутривидовая вариация SLA больше, чем значений Chl, (0.41±4 и 0.18±3 соответственно). Это вместе с более предсказуемой реакцией SLA на изменения условий среды может свидетельствовать о том, что адаптация листа к различным условиям среды в значительной мере осуществляется за счёт изменения его плотности.