scholarly journals Relation of hypertension with episodic primary headaches and chronic primary headaches in population of Rafsanjan cohort study

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Movahedeh Mohammadi ◽  
Fatemeh Ayoobi ◽  
Parvin Khalili ◽  
Narges Soltani ◽  
Carlo La Vecchia ◽  
...  

AbstractHeadache has a variety of types, such as episodic primary headaches (EPH) and chronic primary headache (CPH) in its primary form. There is a positive correlation between these two types of headaches and hypertension (HTN), but in some works this correlation has been reported negatively. Therefore, we planned to study HTN-CPH as well as HTN-EPH correlation in our population. A sample of Rafsanjan population (10,000 individuals) entered the cohort study, as one of the Prospective Epidemiological Research Studies in Iran (PERSIAN). We compared the frequency of HTN categories in CPH and EPH cases with a normal population. Out of 9933 participants (46.6% males and 53.4% females) about 29% had EPH and 7.5% had CPH. HTN was found in 24.27% of EPH cases and 31.98% of CPH cases. HTN was also found to be associated with EPH and CPH in the crude model. Two Categories of HTN (Long controlled and uncontrolled) were not associated with EPH. On the other hand, CPH showed associations with all of the HTN categories. After included all variables and confounders, EPH and CPH had association with HTN without any considerable changes. There is strong HTN-EPH as well as HTN-CPH correlations in the studied population.

2021 ◽  
Author(s):  
Movahedeh Mohammadi ◽  
Fatemeh Ayoobi ◽  
Parvin Khalili ◽  
Narjes Soltani ◽  
Carlo La Vecchia ◽  
...  

Abstract Background: Headache has a variety of types, such as Migraine and chronic daily headache (CDH) in its primary form. There is a positive correlation between these two types of headaches and hypertension (HTN), but in some works this correlation has been reported negatively. Therefore, we planned to study HTN-Migraine as well as HTN-CDH correlation in our population.Methods: A sample of Rafsanjan population (10000 individuals) entered the cohort study, as a part of the prospective epidemiological research studies in IrAN (PERSIAN). In this population, we compared the frequency of HTN categories in cases with Migraine and CDH with a normal population (without Migraine).Results: Out of 9990 participants (46.6% males and 53.4% females) about 29% had Migraine and 7.5 % had CDH.HTN was found in 24.27% of Migraine and 31.98% of CDH cases. HTN was also found to be associated with Migraine and CDH in the crude model. Two Categories of HTN (Long controlled and uncontrolled) were not associated with Migraine. On the other hand, CDH showed associations with all the HTN categories. Moreover, in a model, which included all variables and confounders, Migraine and CDH had association with HTN without any considerable changes.Conclusion: Our study showed that there is strong HTN-Migraine as well as HTN-CDH correlations in the studied population.


2011 ◽  
Vol 335-336 ◽  
pp. 1219-1222
Author(s):  
Ru Qin Wang

By the experimental research to the effect sucrose-natural gypsum as composite retarder on the performance of cement and concrete. This paper analyzes and summarizes the fact that the influence of this kind of composite retarder is more obvious than the slow setting effect of a single sugar or plaster. And the retardation of cement and concrete the mixing time is basically the amount of sugar a positive correlation. And on the other hand, it will not influence other physical properties.


Author(s):  
Taleb Abu Zahra

An experiment was conducted to determine the optimum ethephon concentration on olive fruit harvesting at different Jordan locations. The study was carried out on Nabali olive cultivar at “Irbid and Ajlon” locations. Treatments were consisted of five ethephon concentrations, which are: 0, 1000, 2000, 3000 and 4000 ppm, each concentration was repeated 4 times. 10 days after ethephon applications, data were collected and analyzed according to the randomized completely block design. Results revealed that all of the used ethephon concentrations promote leaf drop, which remains within the acceptable ranges in both locations. Although, ethephon dosage had significant effects on harvesting productivity at 0.05 levels; best results were obtained by using 3000 ppm concentration at Irbid location, while at Ajlon; best results were observed with treating the olive fruits with 4000 ppm ethephon concentration. On the other hand, positive correlation were observed between the percent of leaf drop and the total harvested fruits


Author(s):  
Taleb Abu Zahra

An experiment was conducted to determine the optimum ethephon concentration on olive fruit harvesting at different Jordan locations. The study was carried out on Nabali olive cultivar at “Irbid and Ajlon” locations. Treatments were consisted of five ethephon concentrations, which are: 0, 1000, 2000, 3000 and 4000 ppm, each concentration was repeated 4 times. 10 days after ethephon applications, data were collected and analyzed according to the randomized completely block design. Results revealed that all of the used ethephon concentrations promote leaf drop, which remains within the acceptable ranges in both locations. Although, ethephon dosage had significant effects on harvesting productivity at 0.05 levels; best results were obtained by using 3000 ppm concentration at Irbid location, while at Ajlon; best results were observed with treating the olive fruits with 4000 ppm ethephon concentration. On the other hand, positive correlation were observed between the percent of leaf drop and the total harvested fruits


2009 ◽  
Vol 60 (1) ◽  
pp. 3-14 ◽  
Author(s):  
Suzana Erić ◽  
Mihovil Logar ◽  
Dragan Milovanović ◽  
Danilo Babič ◽  
Borivoj Adnađević

Ti-in-biotite geothermometry in non-graphitic, peraluminous metapelites from Crni vrh and Resavski humovi (Central Serbia)The study discusses the application of the Ti-in-biotite geothermometer of Henry et al. (2005) to the example of biotites from non-graphitic peraluminous micaschists of Central Serbia. Three petrographically different micaschists were distinguished on the basis of the following mineral assemblages: CV1 (St-Grt-Bt-Ms-Pg-Pl-Qtz), CV2 (Grt-St-Ky-Bt-Ms-Pl-Qtz) and RH (Grt-St-Bt-Ms-Pl-Qtz). Applying different geothermobarometers it was estimated that the studied micaschists were metamorphosed at average temperatures and pressures of 530 °C and 520 MPa (CV1incl), 580 °C and 670 MPa (CV1), 630 °C and 700 MPa (CV2) and 550 °C, 680 MPa (RH). The average temperatures obtained by the Ti-in-biotite method revealed uniform values for CV1 and CV2 micaschists and these values are very similar to the temperatures obtained by other methods. In contrast, the application of Ti-in-biotite geothermometer for RH micaschist yields the temperature difference of 85-110 °C. The variability of temperature is interpreted as a result of a positive correlation of Ti contents and XMgvalues in RH biotite, which is in disagreement with the principles of the Ti-in-biotite method. The positive Ti-XMgcorrelation is a result of the compositional variability shown by RH biotites from different samples, which can possibly be related to compositional inhomogeneities of the pelitic protolith. On the other hand, the Ti-in-biotite geothermometer for CV2 biotite gave very uniform temperatures despite variable Ti contents (Ti = 0.260, sd = 0.018 apfu). This is explained as result of the low sensitivity of Ti-in-biotite geothermometer for high Ti concentrations (> 0.25 apfu).


2021 ◽  
Vol 3 (2) ◽  
pp. 115-125
Author(s):  
Deni Ramdani

Overconfident managers create biases that make them overvalue their company and its investments. This study takes a sample of companies that are listed in the Indonesia Stock Exchange, for the years 2013-2017. Companies that are listed on the LQ 45 index have high liquidity so that the stock is active so it doesn't interfere with the accuracy of the research being carried out. The results showed that internal funding has a significant posi-tive relationship with company investment. This shows that the more internal financing, the greater the scale of the investment the company will make. Internal financing and overinvestment have a significant positive correlation. So that companies tend to over-invest. Internal finance has a dual role to play in investment. One side of the bias to im-prove investment efficiency by increasing the scale of investment and reducing the scale of investment, on the other hand it can cause excessive investment.DOI: https://doi.org/10.26905/afr.v3i2.3834


Cephalalgia ◽  
2016 ◽  
Vol 37 (1) ◽  
pp. 20-28 ◽  
Author(s):  
Raimundo Pereira Silva-Néto ◽  
Ânderson Batista Rodrigues ◽  
Dandara Coelho Cavalcante ◽  
Pedro Henrique Piauilino Benvindo Ferreira ◽  
Ema Pereira Nasi ◽  
...  

Objectives The objective of this article is to characterize olfactory stimulation as a trigger of headaches attacks and differentiation between migraine and other primary headaches. Participants and methods The study was prospective and experimental, with comparison of groups. A total of 158 volunteers (73 men and 85 women) were diagnosed with primary headaches, according to the criteria of the International Classification of Headache Disorders, Third Edition (beta version) (ICHD-3β). The study was conducted by two examiners; one of them was assigned to diagnose the presence and type of primary headache, while the other was responsible for exposing the volunteers to odor and recording the effects of this exposure. Results Of the 158 volunteers with headache, there were 72 (45.6%) cases of migraine and 86 (54.4%) with other primary headaches. In both groups, there were differences in headache characteristics (χ2 = 4.132; p = 0.046). Headache attacks (25/72; 34.7%) and nausea (5/72; 6.9%) were triggered by odor only in patients with migraine, corresponding to 19.0% (30/158) of the sample, but in none with other primary headaches (χ2 = 43.78; p < 0.001). Headache occurred more often associated with nausea ( p = 0.146) and bilateral location ( p = 0.002) in migraineurs who had headache triggered by odor. Headache was triggered after 118 ± 24.6 min and nausea after 72.8 ± 84.7 min of exposure to odor. Conclusions The odor triggered headache attacks or nausea only in migraineurs. Therefore, headache triggered by odors may be considered a factor of differentiation between migraine and other primary headaches and this trigger seems very specific of migraine.


1990 ◽  
Vol 123 (6) ◽  
pp. 637-642 ◽  
Author(s):  
Alessandro Mauri ◽  
Francesco Serri ◽  
Francesco Caminiti ◽  
Salvatore Mancuso ◽  
Walter Fratta ◽  
...  

Abstract. α-MSH, ACTH and β-endorphin were measured by radioimmunoassay in samples of amniotic fluid collected from the 32nd to the 38th gestational week and at labour from normal pregnancies and pregnancies complicated by gestosis. In normal pregnancies, the concentration of α-MSH, ACTH and β-endorphin remained relatively constant during the last 7 gestational weeks, but increased at labour above the values of the 38th week by 88, 143 and 96%, respectively. A positive correlation between β-endorphin and α-MSH (r=0.92) or ACTH (r=0.76) levels was found when labour values were considered in the regression analysis. In contrast, when labour values were excluded, only a poor positive correlation between β-endorphin and α-MSH (r=0.52) was found. In complicated pregnancies, α-MSH and ACTH concentrations were similar to those found in normal pregnancies; on the other hand, the level of β-endorphin, was found to be 130% higher than normal. As in normal pregnancies, α-MSH, ACTH and β-endorphin levels increased at labour, but only by 46, 44 and 23%, respectively. In contrast to in normal pregnancies, the correlation between β-endorphin and α-MSH or ACTH was not significantly modified by labour values. The present results confirm and extend previous studies showing that β-endorphin may be considered a marker of fetal distress and that the fetal pituitary is capable of reacting to stressful stimuli in normal and suffering fetuses.


2019 ◽  
Vol 2 (1) ◽  
pp. 01-04
Author(s):  
Ibrahim M. Hamouda ◽  
Majed A. Almalki

Background: The problem of composite resin filling is the longer time consumed for incremental application. Bulk-fill composite resins were introduced to the market as substitutes for dental amalgam for restoration of posterior teeth. Objectives: The aim of this study was to evaluate the curing depth and degree of conversion of two bulk-fill composite resins. Materials and methods: . Specimens of specific dimensions were prepared from Glacier and SureFil (universal shade, A2), they classified as bulk-fill composite resins. Depth of cure, degree of conversion at different thicknesses for each material (2,3,4,5 and 6 mm) for each thickness separately. The curing depth was determined by the scrapping method (ISO 4049, 2000). The degree of conversion was measured by the Buker FTIR Spectroscopy. Results: The results indicated that, Glacier composite resin has greater curing depth than that of SureFil composite resin. Glacier composite resin was cured above 6 mm thickness, while SureFil composite resin was cured above 5 mm. In general, the degree of conversion was different at the different thicknesses of the materials. SureFil composite resin showed highest degree of conversion at 3 mm followed by 2 mm thickness, while the lowest degree of conversion was noted at 6 mm thickness. Glacier composite resin has the highest degree of conversion at 3 mm followed by 2 mm thickness, while the lowest degree of conversion was noted at 6 mm thickness. SureFil showed positive correlation between the depth of cure and the degree of conversion. Glacier composite resin showed no significant correlation between the depth of cure and degree of conversion. Conclusions: The studied bulk-fill composite resins, cured up to 5mm to 6mm thicknesses. 2 and 3mm thicknesses adequately polymerized than 4 mm, 5 mm and 6 mm thicknesses. The degree of conversion of 2 mm and 3 mm thicknesses was greater than that of the other thicknesses. There was positive correlation between the degree of conversion and curing depth of SureFil composite resin. On the other hand, Glacier composite resin showed no significant correlation between the depth of cure and degree of conversion.


Ornis Svecica ◽  
2021 ◽  
Vol 31 ◽  
pp. 34-43
Author(s):  
Reino Andersson

This paper is an attempt to describe how strong the covariation is between systematic counts and spontaneous reporting of staging waders at the Getterön Nature Reserve in southwestern Sweden. The material is based on systematic and spontaneous observations of twelve species of waders, made on the same days during the autumn migration in July–October 2010–2019. There is a significant positive correlation between the two methods for nine of twelve species. However, there is a large variation in the strength of the correlations, with the strongest correlation seen for Dunlin Calidris alpina. The Wood Sandpiper Tringa glareola, Green Sandpiper Tringa ochropus, and Little Stint Calidris minuta, on the other hand, show no significant correlations. This shows the difficulties in evaluating quantitative data of the wader occurrence at stopover areas such as Getterön. The variation in correlation between count methods between different species entails an uncertainty, which is probably due to low reliability in the spontaneous reporting. Thus, in the case of studies of staging waders based solely on spontaneous data, caution should be exercised.


Sign in / Sign up

Export Citation Format

Share Document