scholarly journals The Assessment of Radon Emissions as Results of the Soil Technogenic Disturbance

2020 ◽  
Vol 17 (24) ◽  
pp. 9268
Author(s):  
Timofey Leshukov ◽  
Aleksey Larionov ◽  
Konstantin Legoshchin ◽  
Yuriy Lesin ◽  
Svetlana Yakovleva
Keyword(s):  
Flux Density ◽  
Coal Mining ◽  
Underground Mining ◽  
Residential Buildings ◽  
Indoor Radon ◽  
Underground Mines ◽  
Control Group ◽  
Case Group ◽  
Exposure Level ◽  
Radon Flux

222Rn is a specific indoor-type pollutant that represents a primary radiological hazard as a main source of ionizing radiation (IR) for humans. Coal mining creates new sources of gas that are formed over mines. This process can significantly increase the density of radon flux. Therefore, the concentration of radon in a room can increase. We investigated the territory of the Leninsk-Kuznetsky district of the Kemerovo region, which is subject to underground mining. Two groups of residential locations and measuring points of radon flux density were selected to identify the higher emanation relationship of radon and mining-affected areas. The first group (Case group) included subjects located within the territory of the underground mine; the other (Control group) included subjects in an area without mining. Radon flux density in coal mining areas was significantly higher than in the rest of the territory; moreover, the percentage of values in the Case group that had a radon flux density above 80 mBq·m−2·s−1 was 64.53%. For the Case group, 20.62% of residential buildings had a radon concentration above 200 Bq/m3. For the studied area, the radon flux density correlates positively (r = 0.79, p = 0.002) with indoor radon. Additional clastogenic/aneugenic effects are also found in dwellings with increased volume activity of radon (VAR) within the territories of underground mines. Ring chromosomes are positively correlated with radon levels in smoker groups but not in non-smokers. An increased frequency of binucleated (BN) cells with micronuclei (MN) is also positively correlated with VAR regardless of smoking status. It has been concluded that reducing the total exposure level of a population to radon can be achieved by monitoring areas with underground mines where radon is emitted heavily.

scholarly journals The Dependence of Volumetric Radon Activity in Indoor Air on Environmental Conditions

2020 ◽  
Vol 71 (7) ◽  
pp. 197-209
Author(s):  
Ingrida Pliopaite Bataitiene ◽  
Raimondas Grubliauskas ◽  
Raimondas Buckus ◽  
Tatjana Juzsakova ◽  
Igor Cretescu
Keyword(s):  
Indoor Air ◽  
Residential Buildings ◽  
Indoor Radon ◽  
Environmental Parameters ◽  
Exposure Level ◽  
Human Beings ◽  
Radiological Risk ◽  
Radon Activity ◽  
Average Value ◽  
Average Activity

The radon isotope, 222Rn, has a significant impact on human beings due to the irradiation caused illnesses. The article deals with the process of radon entering into residential buildings and its residential exposure level related to changes in environmental parameters such as temperature, pressure and moisture content. Dependence of the indoor radon activity on environmental factors has been studied at three sites: two multi-storey and one low-rise buildings in autumn (September � November 2014) period. During the study period radon activity values in low-rise house constructed in 2009, in Lithuania at Ukmerge district, Jogvil� village, ranged from 73 � 13 to 747 � 134 Bq m-3 and the average value was 382 � 76 Bq m-3. This value is higher than the allowed average activity value of 300 Bq m-3 and could present a radiological risk for inhabitants if the above mentioned parameters are not taken into account.

The exposure levels of phthalates in pregnant women and impact factors of fetal malformation

2021 ◽  
pp. 096032712110495
Author(s):  
Ling Wang ◽  
Wei Duan ◽  
Yun Zhao ◽  
Guoqiang Sun ◽  
Ying Lin ◽  
...  
Keyword(s):  
Pregnant Women ◽  
Low Income ◽  
Demographic Data ◽  
High Body Mass Index ◽  
Impact Factors ◽  
Control Group ◽  
Case Group ◽  
Exposure Level ◽  
Fetal Malformation ◽  
Fetal Malformations

Methods Urine samples were collected from 157 women with fetal malformations (case group) and 147 women with normal fetuses (control group). High-performance liquid chromatography-mass spectrometry (HPLC-MS) was used to detect the content of eight metabolites of phthalate compounds in urine, including monoethyl phthalate (MEP), mononbutyl phthalate (MBP), monoisobutyl phthalate (MiBP), mono-(2-ethylhexyl) phthalate (MEHP), mono-(2-ethyl-5-hydroxyhexyl) phthalate (MEHHP), mono-(2-ethyl-5-carboxypentyl) phthalate (MECPP), mono-(2-ethyl-5-oxohexyl) phthalate (MEOHP), and mono-benzyl phthalate (MBzP). Demographic data were collected from questionnaires administered in specimen collection. Results The exposure level of MEOHP and MEHP in the case group was higher than the others. And there were significant differences between structural malformations and chromosomal malformations in the levels of MEHHP and MEOHP. Pregnant women with low income, high body mass index (BMI), frequent plastic contact, and low nutrients intake were at risk of suffering from fetal malformation. Conclusion This study provides evidence for the correlation between the concentration of phthalates and fetal malformation. In addition, decreasing plastic exposure and supplementing nutrients may reduce the incidence of fetal malformations.

Exposure levels of mycophenolic acid are associated with comorbidities in children with systemic lupus erythematosus

Lupus ◽  
2021 ◽  
pp. 096120332110345
Author(s):  
Qiaofeng Ye ◽  
Guangfei Wang ◽  
Jinmiao Lu ◽  
Yidie Huang ◽  
Junqi Zhang ◽  
...  
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Random Forest ◽  
Mycophenolic Acid ◽  
Lupus Erythematosus ◽  
Therapeutic Drug ◽  
Control Group ◽  
Case Group ◽  
Exposure Level ◽  
Systemic Lupus ◽  
Exposure Levels

Introduction Little is known about the relationship between exposure levels of mycophenolic acid (MPA), the active metabolite of mycophenolate mofetil (MMF), and comorbidities of systemic lupus erythematosus (SLE) in children. This study aims to explore this association. Methods Longitudinal data from SLE children, who were taking MMF for immunosuppression and under therapeutic drug monitoring (TDM), were retrospectively collected. Area under the concentration-time curve of mycophenolic acid (MPA) over 24 hours (AUC0–24h) was estimated with Bayesian methods. Logistic regression and random forest models were used to explore the association between comorbidities and MPA exposure levels. Results This study included 107 children with 358 times of follow-up (median age 169.02 months). The incidence of diabetes, acute kidney injury (AKI), or pneumonia was significantly associated with AUC0–24h (odds ratio [OR] 0.991, 95% confidence interval [CI] 0.982–0.999), SLE duration (OR 1.012, 95% CI 1.002–1.022), lymphocyte percentage (OR 0.959, 95% CI 0.925–0.991), plasma albumin levels (OR 0.891, 95% CI 0.843–0.940), use of aspirin (OR 0.292, 95% CI 0.126–0.633) and hydroxychloroquine (OR 0.407, 95% CI 0.184–0.906). The random forest model showed that albumin and AUC0–24h were two important predictors. The case group (with the three comorbidities) had a mean AUC0–24h of 73.63 mg · h/L, while the control group had a mean AUC0–24h of 100.39 mg · h/L. Conclusions Increased levels of MPA exposure are associated with decreased incidence odds of diabetes, AKI or pneumonia in SLE children. An AUC0–24h of 100.39 mg · h/L or an AUC0-12h of 50.20 mg · h/L could be used as the targeted exposure level for clinical practice.

Status and development prospects of standard means for reproducing units of volumetric activity of radon and thoron and radon flux density from the soil surface

2020 ◽  
pp. 69-73
Author(s):  
S.G. Birjukov ◽  
O.I. Kovalenko ◽  
A.A. Orlov
Keyword(s):  
Flux Density ◽  
Soil Surface ◽  
National Standards ◽  
Measuring Instruments ◽  
Volumetric Activity ◽  
Standard Means ◽  
Radon Flux ◽  
Technical Solutions ◽  
Development Prospects ◽  
Physical Principles

The approach to creating standard means for reproducing units of volumetric activity of radon and thoron and flux density of radon from the soil surface is described based on the physical principles of reproducing these units of quantities and using as technical means for reproducing bubblers with a radioactive solution of radium salt, reference capacities of known volume, emanation chambers for generation of a toron, a gamma spectrometer with a semiconductor detector from highly pure germanium and radon radiometers. Reproduction consists in the physical realization of units in accordance with their definition as applied to the formation of radon and thoron in the radioactive rows of radium and thorium. The proposed approach will allow to determine the structural, structural and other technical solutions of standard measuring instruments, as well as specific techniques and methods of working with them. The creation of standard tools and technologies for reproducing units of volumetric activity of radon and thoron and the density of radon flux from the soil surface will ensure the unity and reliability of measurements in the field of ionizing radiation, traceability of units and bringing the characteristics of national standards in line with world achievements.

HUBUNGAN TUNGAU DEBU RUMAH, PAPARAN ASAP ROKOK DAN RIWAYAT PENYAKIT KELUARGA TERHADAP KEJADIAN ASMA BRONKIAL PADA ANAK USIA 5 – 10 TAHUN DI WILAYAH KERJA PUSKESMAS LEMPAKE KOTA SAMARINDA TAHUN 2016

2018 ◽  
Vol 3 (1) ◽  
pp. 1
Author(s):  
Sri Evi New Yearsi Pangadongan ◽  
Agustina Rahyu ◽  
Selvy Pasulu
Keyword(s):  
Cigarette Smoke ◽  
Bronchial Asthma ◽  
Sampling Technique ◽  
Total Sample ◽  
Control Group ◽  
Case Group ◽  
Chi Square ◽  
History Of ◽  
Weather Changes ◽  
And Gender

Bronchial Asthma generally starts from childhood which is condition where respiration channel experiences constriction because of hyperactivity with some specific stimulation which cause inflammation. Some risk factors are smoking exposure of cigarette smoke, weather changes, mite on house dirt, pet and history of family sickness. The purpose of this research is to know Relation of mite on house dirt, exposure of cigarette smoke  and history of family sickness with bronchial asthma incident to child 5 – 10  years old on working area of Puskesmas Lempake Samarinda City in 2016. Method which used was analytic survey with Case Control approaching. The total sample was 36 children which consisted of 18 case group and 18 control group with matching by using age and gender which submitted with Purposive Sampling technique. Data Analysis used Chi Square with wrong degree α = 0,005. The result showed that there was relation of mite of house dirt (p = 0,006), history of family sickness (p = 0,001) and no relation with exposure of cigarette smoke (p = 0,370) with bronchial asthma incident to child 5 – 10 years old on working area of Puskesmas Lempake Samarinda City in 2016.

Faktor-Faktor Determinan yang melatar belakangi Kehamilan Remaja di Desa Pandansari Kecamatan Poncokusumo Kabupaten Malang

2020 ◽  
Vol 7 (2) ◽  
pp. 247-255
Author(s):  
Maria Magdalena Setyaningsih ◽  
Emy Sutiyarsih
Keyword(s):  
Sex Education ◽  
Teen Pregnancy ◽  
Teenage Pregnancy ◽  
Well Being ◽  
Case Control ◽  
Control Group ◽  
Case Group ◽  
The Family ◽  
History Of ◽  
First Time

Kehamilan remaja adalah kehamilan yang terjadi pada remaja berusia kurang dari 20 tahunan. Kehamilan remaja memberikan banyak kerugian bagi kesehatan, mental dan psikologis, kesejahteraan ekonomi dan peluang karier, kemiskinan dan prospek kehidupan masa depan remaja. Tujuan penelitian mengidentifikasi faktor determinan yang melatarbelakangi terjadinya kehamilan remaja. Jenis penelitian adalah penelitian analitik kategorik jenis survei kuantitatif dengan desain case control. Populasi semua perempuan yang bertempat tinggal di wilayah dusun Wonosari, Sukosari, dan Krajan Pandansari dan pernah/sedang hamil pertama kali pada usia kurang dari 20 tahun. Teknik pengambilan sampel cluster random sampling besar sampel 73. Berdasarkan hasil model akhir analisis multivariat, diketahui bahwa variabel pendidikan, riwayat kehamilan remaja pada keluarga dan usia menikah merupakan variabel yang berhubungan dengan kejadian kehamilan remaja setelah dikontrol oleh variabel akses informasi, responden berpendidikan rendah memiliki peluang 20,8 kali lebih tinggi, responden yang memiliki riwayat kehamilan remaja pada keluarga memiliki peluang 14,9 kali lebih tinggi, responden yang menikah pada usia <20 tahun memiliki peluang 12,1 kali lebih tinggi, responden dengan pemahaman yang kurang baik terkait penggunaan kondom memiliki peluang 5,9 kali lebih tinggi untuk terjadi kehamilan remaja. Oleh karena itu perlu dibangun karakter buiding, sosial karakter suport untuk para ibu remaja dan keluarga sehingga terbangun interaksi yang baik dalam keluarga yang dilandasi dengan pendidikan dan pemahaman yang baik tentang Pendidikan seksualitas. Teen pregnancy is a pregnancy that occurs in adolescents aged less than 20 years old. Teen pregnancy provides many disadvantages for health, mental, psychological, economic well-being, career opportunities, poverty, and the future life. The aim of the study was to identify the determinants underlying teen pregnancy incidence. This study was a quantitative study with categorical analytic method. The study design used a case control with two comparison groups. The groups were control group and case group. The population in this study was all women who lived in the Wonosari, Sukosari, and Krajan Pandansari district and had or were pregnant for the first time at the age of less than 20 years old. Seventy three respondents were recruited using cluster sampling technique. The case group consists of women who were or had pregnant for the first time at the age of less than 20 years old and their children are currently aged ≤ 1 years old. The control group consists of women who were pregnant for the first time at the age of > 20 years old. The data was collected using a questionnaire. The findings showed that education, history of teen pregnancy in family and the age of marriage were related to the incidence of teen pregnancy after being controlled by information access. Low-educated respondents had 20.8 times higher chance of experiencing teen pregnancy; respondents with a history of teen pregnancy in the family had 4.9 times higher chance of experiencing teen pregnancy; respondents who were married at the age of < 20 years old had 12.1 times higher chance of experiencing teen pregnancy; respondents with poor understanding of condom use had 5.9 times higher chance of teenage pregnancy. In conclusion, the findings suggest to build good interactions in the family based on education and a good understanding of sex education.

Berat Badan, Panjang Badan dan Faktor Genetik sebagai Prediktor Terjadinya Stunted pada Anak Sekolah

2017 ◽  
Vol 19 (2) ◽  
pp. 95
Author(s):  
Hetriana Leksananingsih ◽  
Slamet Iskandar ◽  
Tri Siswati
Keyword(s):  
Birth Weight ◽  
Nutritional Status ◽  
School Children ◽  
Genetic Factors ◽  
Control Group ◽  
Case Group ◽  
Normal Birth Weight ◽  
Chi Square ◽  
Normal Birth ◽  
Chi Square Test

Background: Riskesdas in 2013 showed that Yogyakarta (DIY) had a prevalence of stunted new kid in school is less than the national average, which is 14.9% (MOH, 2013). Stunted or short, is a linear growth retardation has been widely used as an indicator to measure the nutritional status of individuals and community groups. Stunted can be influenced by several factors: birth weight, birth length match and genetic factors. Objective: To determine the weight, length of low birth weight and genetic factors as predictors of the occurrence of stunted on elementary school children. Methods: The study was a case control analytic. Research sites in SD Muhammadiyah Ngijon 1 Subdistrict Moyudan. The study was conducted in May and June 2015. The subjects were school children grade 1 to grade 5 the number of cases as many as 47 children and 94 control children. With the inclusion criteria of research subjects willing to become respondents, was present at the time of the study, they have a father and mother, and exclusion criteria have no data BB and PB birth, can not stand upright. The research variables are BBL, PBL, genetic factors and TB / U at this time. Data were analyzed by chi-square test and Odd Ratio (OR) calculation. Results: In case group as much as 91.5% of normal birth weight and length of 80.9% of normal birth weight, most of the height of a normal mother and father as many as 85.1%. In the control group as much as 78.7% of normal birth weight and 61.7% were born normal body length, height mostly normal mom and dad that 96.7% of women and 90.4% normal normal father. Statistical test result is no significant correlation between height mothers with stunted incidence in school children, and the results of chi-square test P = 0.026 with value Odd Ratio (OR) of 3.9 and a range of values from 1.091 to 14.214 Cl95%. Conclusion: High maternal body of mothers can be used as predictors of the occurrence of stunted school children and mothers with stunted nutritional status have 3.9 times the risk of having children with stunted nutritional status.

Impact of Physical Activity on the Incidence of Vascular Diseases in Adults with Type 2 Diabetes Mellitus

2019 ◽  
Vol 8 ◽  
pp. 1549
Author(s):  
Babak Pezeshki ◽  
Ehsan Bahramali ◽  
Amir Ansari ◽  
Aliasghar Karimi ◽  
Mojtaba Frajam ◽  
...  
Keyword(s):  
Physical Activity ◽  
Diabetes Mellitus ◽  
Vascular Function ◽  
Vascular Diseases ◽  
Major Complication ◽  
Control Group ◽  
Case Group ◽  
Vascular Events ◽  
The Relationship

Background: Diabetes mellitus (DM) is a common metabolic disease worldwide and has many complications. The vascular events are the major complication of DM that have an important effect on mortality and disability. The physical activity (PA) enhances the vascular function by several pathways. The aim of this study was to evaluation of the relationship between PA and vascular diseases in patients with DM.Materials and Methods: This research was performed as the case-control study that was extracted from a prospective epidemiological research study in Iran (PERSIAN). The patients with type 2 DM more than six months defined as case group and the non-DM subjects in control group with ratio 1:2, and both groups were matched in the term of age and sex. The MET score was used to evaluate the level of PA and blood glucose, lipid profile, body mass index, overweight, dyslipidemia, glomerular filtration rate, myocardial infarction (MI), unstable angina, and stroke.Results: Overall, 1242 patients with DM were extracted, and 2484 non-diabetic subjects were investigated. In the case group, 355(28.6 %) and 887(71.4%) were men and women, respectively, the and 710 (28.6%) men and 1774(71.4%) women in control group. The mean MET score was 30 and 40.97 in the DM and non-DM groups, respectively (P˂0.001). The frequency of MI, stroke, and cardiac ischemia were 44 (3.5%), 37 (3%), and 267 (21.5%), respectively in DM group, and 54 (2.2%), 43 (1.7%), and 389 (15.7%), respectively in non-DM group.Conclusion: The incidence of vascular events associated with PA level in patients with DM and adherence to regular PA reduce the vascular events and DM complications. [GMJ.2019;inpress:e1549]

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