RELATION ENTRE LE DEGRE DE POURRITURE, L’IMPEDANCE DES TISSUS ET LA DENSITE OPTIQUE D’UN EXTRAIT A L’ACETATE D’ETHYLE CHEZ LA RACINE DE LA LUZERNE

1976 ◽  
Vol 56 (1) ◽  
pp. 59-61
Author(s):  
C. RICHARD ◽  
C. GAGNON
Keyword(s):  
Ethyl Acetate ◽  
Optical Density ◽  
Negative Correlation ◽  
Practical Method ◽  
Significant Negative Correlation ◽  
The Other ◽  
Root Tissue ◽  
Strong Positive Correlation ◽  
Coefficient Of Correlation ◽  
Ethyl Acetate Extracts

The impedance of blocks of root tissue of several different rot indices was measured in alfalfa. In addition, optical density readings of ethyl acetate extracts of these blocks were made at 275 and 350 nm. Calculation of the coefficient of correlation between impedance and rot indices 2 to 5 indicates a significant negative correlation. On the other hand, a strong positive correlation was observed between high optical densities and elevated rot indices. While greater precision is achieved with optical density principally for low level of rot, experience indicates that a rot index estimated visually is the most rapid practical method.

Morpho-Biochemical Characteristics of Brinjal Germplasms Affect the Abundance And Infestation of Jassid

2021 ◽  
Vol 19 (1) ◽  
pp. 81-91
Author(s):  
F Yasmin ◽  
MR Amin ◽  
M Afroz ◽  
MAH Swapon ◽  
MM Hossain
Keyword(s):  
Protein Content ◽  
Chlorophyll Content ◽  
Negative Correlation ◽  
Significant Positive Correlation ◽  
Significant Negative Correlation ◽  
Reducing Sugar ◽  
Total Sugar ◽  
The Other ◽  
Biochemical Characteristics ◽  
Positive Correlation

The tropical vegetable, brinjal is cultivated throughout the year in Bangladesh but the crop is infested by a number of insects including jassid. This study investigated the effects of different biophysical and biochemical characteristics of twelve brinjal germplasms on the abundance and infestation of jassid. The experiment was conducted during September 2018 to March 2019 in Gazipur, Bangladesh with twelve brinjal germplasms namely BD-7320, BD-7328, BD-9952, BD-10154, BD-10158, BARI Begun-1, BARI Begun-4, BARI Begun-5, BARI Begun- 6, BARI Begun-7, BARI Begun-8 and BARI Begun-9. The incidence of jassid was recorded from 3rd December to 26th March, and the lowest population was found on BARI Begun- 6. Among the biophysical traits, plant height, number of branch and leaf per plant, and leaf area exerted significant positive correlation; whereas trichome on lower and upper surfaces of leaf, spine per stem and leaf showed significant negative correlation with the abundance of jassid. On the other hand, moisture, reducing sugar, total sugar and protein content of the leaves and fruits, chlorophyll content of the leaves exerts significant positive correlation but ash and pH contents of the leaves and fruits were negatively correlated with the abundance of jassid. Jassids showed the lowest level of leaf infestation on BARI Begun-6, which could be for further analysis to develop jassid resistant brinjal. SAARC J. Agric., 19(1): 81-91 (2021)

scholarly journals Relationship between the Growth Hormone/Insulin-Like Growth Factor-I Axis, Insulin Sensitivity, and Adrenal Androgens in Normal Prepubertal and Pubertal Girls

2003 ◽  
Vol 88 (3) ◽  
pp. 1389-1393 ◽  
Author(s):  
Gabriela Guercio ◽  
Marco A. Rivarola ◽  
Eduardo Chaler ◽  
Mercedes Maceiras ◽  
Alicia Belgorosky
Keyword(s):  
Insulin Resistance ◽  
Insulin Sensitivity ◽  
Negative Correlation ◽  
Significant Positive Correlation ◽  
Significant Negative Correlation ◽  
The Other ◽  
Adrenal Androgen ◽  
Adrenal Androgens ◽  
Igf I ◽  
The Mean

The aim of this study was to analyze the possible implication of changes in the GH/IGF-I axis and in insulin sensitivity for the regulation of adrenal androgen secretion of normal prepubertal and adolescent girls. A total of 61 normal girls were evaluated in prepuberty [Group (Gr)1, n = 33; early (Gr1A, n = 16) and late (Gr1B, n = 17)]; puberty (Gr3, n = 28), early (Gr3A, n = 9) and late (Gr3B, n = 19); and during the transition between prepuberty and puberty (Gr2, n = 26). Insulin sensitivity was estimated by the fasting glucose/insulin ratio (G/I). In Gr1, G/I was significantly higher, and the mean serum IGF-I and serum dehydroepiandrosterone sulfate (DHEAS) were significantly lower than in Gr3 (P < 0.0001). Mean G/I in Gr1A and Gr3A was significantly higher than in Gr1B (P < 0.01) and Gr3B (P < 0.02), respectively, and ratios in Gr1B were also significantly higher than in Gr3A (P < 0.02). However, body mass index (BMI) in Gr1A, Gr1B, and Gr3A was not significantly different, although a significant increment was observed between late prepuberty (Gr1B) and late puberty (Gr3B; P < 0.0001). On the other hand, serum IGF-I levels in Gr1A and Gr3A were significantly lower than those in Gr1B (P < 0.01) and Gr3B (P < 0.02), respectively. The mean serum DHEAS level in Gr1A and Gr3A was significantly lower than in Gr1B (P < 0.01) and Gr3B (P < 0.02), respectively, and the level in Gr1B was also significantly lower than in Gr3A (P < 0.02). Correlation studies within Gr1, Gr2, and Gr3 were also performed. There was a significant positive correlation between serum DHEAS and age and a significant negative correlation between serum DHEAS and G/I in the three groups. However, a significant positive correlation between serum DHEAS and serum IGF-I was only found in Gr1. Furthermore, a significant negative correlation between BMI and the G/I was found in Gr2 and Gr3. Therefore, changes in insulin sensitivity might be involved in adrenal androgen synthesis both in prepuberty and in puberty, as well as during the transition from prepuberty to puberty. Changes in BMI suggest that adiposity might be a mediator of this effect, particularly during late puberty. On the other hand, the GH/IGF axis might be an important metabolic signal involved in the maturational changes of human adrenal androgens during prepuberty, at the time of adrenarche. Indeed, a significant negative correlation between G/I and serum IGF-I was found in Gr1, as well as in Gr2. In conclusion, the findings of this study indicate that the GH/IGF-I axis and insulin resistance might be involved in the mechanism of adrenarche during prepuberty in normal girls. Because these relationships had not been seen in boys, we proposed that prepubertal ovarian estrogens might be responsible for the sex difference. The relationship between insulin resistance and adrenal androgens persists during the transition from prepuberty to puberty, as well as during puberty.

Effects of Type of Target, Cognitive Ability, and Age on Projection

1978 ◽  
Vol 46 (3) ◽  
pp. 727-730
Author(s):  
James Halpern ◽  
Anne Myers
Keyword(s):  
Cognitive Ability ◽  
Negative Correlation ◽  
Significant Negative Correlation ◽  
The Other ◽  
The Real

It was hypothesized that older and more cognitively developed children would be less likely to use both attributive and contrast projection. Real and ambiguous target figures were used to assess the effect of the type of target on projection. 30 boys and 31 girls between the ages of 7 yr., 10 mo. and 14 yr., 10 mo. predicted a favored classmate's preferences in each of several categories. They also predicted the preferences of an unfavored classmate and of favored and unfavored ambiguous targets. These predictions were compared with the subjects' own preferences to measure attributive and contrast projection. Type of target affected the amount of projection. There was significantly more contrast projection onto ambiguous targets (dolls) than onto real targets (classmates). There was significantly more attributive than contrast projection for the real targets only. A significant negative correlation of —.26 ( df = 59) was obtained between age and contrast projection onto the real targets. There were no significant correlations between the other measures of projection and the indices of cognitive ability, including age.

Correlations among macular pigment optical density, central macular thickness, and body mass index

2020 ◽  
Vol 1 (4) ◽  
pp. 246-250
Author(s):  
Lee Hong Nien ◽  
◽  
Rafidah Sudarno ◽  
Angela Loo Voon Pei ◽  
Visvaraja Subrayan ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Optical Density ◽  
Negative Correlation ◽  
Significant Positive Correlation ◽  
Significant Negative Correlation ◽  
Macular Pigment ◽  
Macular Thickness ◽  
Central Macular Thickness ◽  
Macular Pigment Optical Density

AIM: To determine the relationship among the macular pigment optical density (MPOD), central macular thickness (CMT) and body mass index (BMI). METHODS: This is a comparative cross-sectional study performed in a single institution. Totally 210 volunteers who met the inclusion criteria were included in this study. The subject’s MPOD was measured using Macula Pigment Screener II (MPS II, by Electron Technology). CMT was measured with Spectral Domain Cirrus Optical Coherence Tomography (OCT), Cirrus (Model 4000, Carl Zeiss Meditec). The information of both MPOD and OCT from both eyes were recorded. The data was analysed using Microsoft® Excel, SPSS, and R (version 3.2.1; R Core Team 2015). RESULTS: There was significant positive correlation between MPOD and CMT (r=0.42, P<0.01) and a significant negative correlation between MPOD and BMI (r=-0.23, P<0.01). CONCLUSION: Our study showed a significant positive correlation between MPOD and CMT. Further study is needed to look at the detailed structure of the fovea and its relationship with MPOD. Our study also found a significant negative correlation between MPOD and BMI, suggesting that a reduction in BMI may increase the density of macula pigment, which can be helpful in preventing age-retinal pigment epitheliitis (ARMD).

ELECTRICAL RESISTANCE IN ALFALFA ROOTS AS AFFECTED BY TEMPERATURE AND LIGHT

1966 ◽  
Vol 46 (2) ◽  
pp. 185-194 ◽  
Author(s):  
F. W. Calder ◽  
L. B. MacLeod ◽  
R. I. Hayden
Keyword(s):  
Cross Sections ◽  
Negative Correlation ◽  
Electrical Resistance ◽  
Rapid Development ◽  
Significant Negative Correlation ◽  
Root Tissue ◽  
Cooling Period ◽  
Electrical Resistance Measurements ◽  
Living Root ◽  
Silver Electrodes

Alfalfa plants grown in the greenhouse and field were used to study the development of coldhardiness as measured by electrical resistance of the root. Electrical resistance was measured with chloridized silver electrodes embedded in the roots. Electrical resistance measurements from electrodes embedded in living root tissue for periods of at least 30 days were comparable to measurements of newly embedded electrodes. A highly significant negative correlation of −0.810 was found between resistance and area of root cross sections. Hardening was induced by reducing temperature and light. Electrical resistance was increased by independent temperature and light changes. Periods of light as short as 30 seconds during the cooling period caused sharp increases in electrical resistance which was indicative of rapid development of hardening in the alfalfa plants.

scholarly journals Can Neutrophil/Lymphocyte Ratio Be Used as an Indicator of Inflammation in Patients with Hyperthyroidism?

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Murat Dağdeviren ◽  
Tolga Akkan ◽  
Dilek Yapar ◽  
Serdar Karakaya ◽  
Tanyel Dağdeviren ◽  
...  
Keyword(s):  
Negative Correlation ◽  
Significant Negative Correlation ◽  
The Other ◽  
Control Group ◽  
Graves Disease ◽  
Neutrophil Lymphocyte Ratio ◽  
Lymphocyte Ratio ◽  
Significant Difference ◽  
Group Members ◽  
Hyperthyroid Patients

Abstract In our study, we aimed to evaluate changes in the neutrophil and lymphocyte series and investigate whether the neutrophil/lymphocyte ratio (NLR) is indicative of inflammations in patients with hyperthyroidism. A total of 161 patients were enrolled, 121 of which had hyperthyroidism (71 Graves’ Disease (GD) and 50 non-Graves hyperthyroidism (NGH) patients) and 40 of which were control group members. Retrospectively, patients’ neutrophil and lymphocyte counts were taken, and the NLR was calculated. While the number of neutrophils was significantly lower in the GD group (p = 0.003), there was no significant difference between the NGH and the control group. In the GD group, NLR values were significantly lower than the other two groups (median 1.39 for GD, median 1.84 for NGH and median 1.83 for the control group, p < 0.001). Only three patients in the GD group had neutropenia. There was also a significant negative correlation between free T3 and neutrophil count and NLR in hyperthyroid patients (r = -0.28, p = 0.001 and r = -0.34, p < 0.001, respectively). In our study, we found that NLR did not in crease in hyperthyroid patients and that this ratio decreased due to the decrease in neutrophil levels in GD. We thus concluded that NLR is not a suitable indicator of hyperthyroidism.

Concentration of calcium, zinc, magnesium, potassium and sodium in the bovine cervical mucus during normal oestrus and oestrus induced by progesterone and/or PGF2α

2002 ◽  
Vol 14 (7) ◽  
pp. 427 ◽  
Author(s):  
T. Tsiligianni ◽  
A. Karagiannidis ◽  
N. Roubies ◽  
P. Saratsis ◽  
P. Brikas
Keyword(s):  
Negative Correlation ◽  
Significant Positive Correlation ◽  
Significant Negative Correlation ◽  
Cervical Mucus ◽  
The Other ◽  
Positive Correlation ◽  
Friesian Cows

Ninety-two healthy Friesian cows were used to determine the concentration of calcium (Ca), zinc (Zn), magnesium (Mg), potassium (K) and sodium (Na) in bovine cervical mucus and to compare these concentrations in cervical mucus collected during spontaneous and induced oestrus. Cows were assigned to four groups: (1) no treatment (2) PRID for 12 days plus pregnant mare's serum gonadotrophin (PMSG; 1000 IU, i.m.) at the removal of the PRID (3) PGF2α , two doses (6 mg, i.m.) 11 days apart, and (4) PRID for 7 days plus one dose of PGF2α (6 mg, i.m.) 24 h before removal of the PRID. The cows of the three induced-oestrus groups received two artificial inseminations (AI), whereas those in the spontaneous-oestrus group received only one. Cervical mucus samples were collected from all cows 5 to 30 min before the first AI. The results of this study can be summarized as follows: (1) viscosity was significantly lower (P<0.001) and crystallization was significantly (P<0.001) higher in the cervical mucus of cows in the spontaneous-oestrus group compared with cows in the induced-oestrus groups; (2)�Na concentration was similar in all groups; (3) concentration of all the other elements in the spontaneous-oestrus group was significantly lower (P<0.05) than in the induced-oestrus groups; (4) there was significant positive correlation (P<0.001) between viscosity and all elements, and significant negative correlation (P<0.05–P<0.001) between crystallization and all elements.

scholarly journals The Relation between Hair-Cortisol Concentration and Various Welfare Assessments of Dutch Dairy Farms

Animals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 821
Author(s):  
Frank J. C. M. van Eerdenburg ◽  
Tessa Hof ◽  
Benthe Doeve ◽  
Lars Ravesloot ◽  
Elly C. Zeinstra ◽  
...  
Keyword(s):  
Negative Correlation ◽  
Rank Correlation ◽  
Dairy Farms ◽  
Significant Negative Correlation ◽  
Strong Positive Correlation ◽  
Hair Cortisol ◽  
Farm Animal Welfare ◽  
Welfare Assessment ◽  
Assessment Protocol ◽  
Welfare Quality

Many protocols have been developed to assess farm animal welfare. However, the validity of these protocols is still subject to debate. The present study aimed to compare nine welfare assessment protocols, namely: (1) Welfare Quality© (WQ), (2) a modified version of Welfare Quality (WQ Mod), which has a better discriminative power, (3) WelzijnsWijzer (Welfare Indicator; WW), (4) a new Welfare Monitor (WM), (5) Continue Welzijns Monitor (Continuous Welfare Monitor; CWM), (6) KoeKompas (Cow Compass; KK), (7) Cow Comfort Scoring System (CCSS), (8) Stall Standing Index (SSI) and (9) a Welfare Index (WI Tuyttens). In addition, a simple welfare estimation by veterinarians (Estimate vets, EV) was added. Rank correlation coefficients were calculated between each of the welfare assessment protocol scores and mean hair cortisol concentrations from 10 cows at 58 dairy farms spread over the Netherlands. Because it has been suggested that the hair cortisol level is related to stress, experienced over a long period of time, we expected a negative correlation between cortisol and the result of the welfare protocol scores. Only the simple welfare estimation by veterinarians (EV) (ρ = −0.28) had a poor, but significant, negative correlation with hair cortisol. This correlations, however, failed to reach significance after correction of p-values for multiple correlations. Most of the results of the different welfare assessment protocols had a poor, fair or strong positive correlation with each other, supporting the notion that they measure something similar. Additional analyses revealed that the modified Welfare Quality protocol parameters housing (ρ = −0.30), the new Welfare Monitor (WM) parameter health (ρ = −0.33), and milk yield (ρ = −0.33) showed negative correlations with cortisol. We conclude that because only five out of all the parameter scores from the welfare assessment protocols showed a negative, albeit weak, correlation with cortisol, hair cortisol levels may not provide a long term indicator for stress in dairy cattle, or alternatively, that the protocols might not yield valid indices for cow welfare.

scholarly journals Serum Leptin Levels Correlate with Growth Hormone Secretion and Body Fat in Children*

1999 ◽  
Vol 84 (10) ◽  
pp. 3586-3590
Author(s):  
Hans Fors ◽  
Hisafumi Matsuoka ◽  
Ingvar Bosaeus ◽  
Sten Rosberg ◽  
Kerstin Albertsson Wikland ◽  
...  
Keyword(s):  
Body Composition ◽  
Body Fat ◽  
Negative Correlation ◽  
Binding Protein ◽  
Significant Negative Correlation ◽  
Strong Positive Correlation ◽  
Positive Correlation ◽  
Gh Secretion ◽  
Igf Binding ◽  
Igf Binding Protein

Abstract The aim of this study was to investigate the relationship among GH secretion, leptin concentrations, and body composition measured with x-ray absorptiometry (DXA) in children. In total, 71 children were investigated, 51 males and 20 females. Their mean chronological age was 10.8 yr (range, 6.2–17.7 ys), and their mean height (sd) was −2.1 (0.63) sd scores. Their mean weight for height sd scores (WHSDS) was 0.2 (1.18). Body composition was investigated using DXA. Blood samples were taken for analysis of leptin, insulin-like growth factor I (IGF-I), IGF-binding protein-3, and 24-h GH secretion. A positive correlation was found between leptin and total body fat (r = 0.83; P&lt; 0.0001) and when fat was expressed as a percentage of body weight (r = 0.86; P &lt; 0.0001). There were significant (P &lt; 0.0001) relationships between leptin and WHSDS (r = 0.45) and between leptin and body mass index (r = 0.69). A significant gender difference in leptin levels was found, but this disappeared after adjustment for body fat, as measured by DXA. There were significant (P&lt; 0.001) inverse correlations between leptin and the AUCb for GH (r = −0.41), leptin, and GHmax (r =− 0.38), where AUCb is the area under the curve above the calculated baseline, and GHmax is the maximum peak during the 24-h GH profile (percent fat and AUCb for GH, r =− 0.43; percent fat and GHmax, r = −0.39). In a multiple stepwise forward regression analysis with leptin as the dependent variable, the percent trunk fat accounted for 77.7% of the leptin variation. With AUCb for GH as the dependent variable, the percent trunk fat accounted for 20.3% of the variation. With GHmax as the dependent variable, the percent trunk fat accounted for 18.8% of the variation, IGF-binding protein-3 for another 8.5%, and the percentage of fat from arms and legs for another 4.4%. We demonstrated a strong positive correlation between leptin levels and body fat, a significant negative correlation between leptin levels and GH secretion, and a significant negative correlation between body fat and GH secretion. We have also shown that specific regional fat depots have different relationships with leptin and particular markers of GH secretion.

Thrombin generation in paediatric patients with congenital heart disease

2008 ◽  
Vol 28 (S 01) ◽  
pp. S61-S66 ◽  
Author(s):  
G. Cvirn ◽  
A. Rosenkranz ◽  
B. Leschnik ◽  
W. Raith ◽  
W. Muntean ◽  
...  
Keyword(s):  
Congenital Heart Disease ◽  
Heart Disease ◽  
Negative Correlation ◽  
Congenital Heart ◽  
Thrombin Generation ◽  
Significant Negative Correlation ◽  
Peak Height ◽  
Global Test ◽  
Paediatric Patients ◽  
Age Range

SummaryThrombin generation was studied in paediatric patients with congenital heart disease (CHD) undergoing cardiac surgery using the calibrated automated thrombography (CAT) in terms of the lag time until the onset of thrombin formation, time to thrombin peak maximum (TTP), endogenous thrombin potential (ETP), and thrombin peak height. The suitability to determine the coagulation status of these patients was investigated. Patients, material, methods: CAT data of 40 patients with CHD (age range from newborn to 18 years) were compared to data using standard coagulation parameters such as prothrombin (FII), antithrombin (AT), tissue factor pathway inhibitor (TFPI), prothrombin fragment 1.2 (F 1.2), thrombin-antithrombin (TAT), activated partial thromboplastin time (aPTT), and prothrombin time (PT). Results: A significant positive correlation was seen between ETP and FII (p < 0.01; r = 0.369), as well as between peak height and F II (p < 0.01; r = 0.483). A significant negative correlation was seen between ETP and TFPI values (p < 0.05; r = –0.225) while no significant correlation was seen between peak height and TFPI. A significant negative correlation was seen between F 1.2 generation and ETP (p < 0.05; r = –0.254) and between F 1.2 generation and peak height (p < 0.05; r = –0.236). No correlation was seen between AT and ETP or peak. Conclusions: CAT is a good global test reflecting procoagulatory and inhibitory factors of the haemostatic system in paediatric patients with CHD.

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