Investigation of Relationship between Particulate Matter (PM2.5 and PM10) and Meteorological Parameters at Roadside Area of First Penang Bridge

The present study was focusing to characterize the particulate matter (PM2.5 and PM10) at the roadside of First Penang Bridge and the associated meteorological parameters influence such as precipitation, temperature, and relative humidity. The study was conducted by focusing on the roadside area of First Penang Bridge (N05°21.375’; E100°23.584’). A total of 12 samples thrice per month for each particulate matter size were collected starting from June 2015 to September 2015. Meteorological data were obtained from the Meteorological Department of Penang on a daily basis and 24-hours averages. Descriptive statistical analysis was conducted in characterizing the relationship between particulate matter concentrations and the target meteorological parameters. Results showed that PM2.5 and PM10 concentrations ranged between 18.06 – 79.51 ?g/m3 and 22.38 – 130.90 ?g/m3 with the overall mean concentration of 39.35 ?g/m3 for PM2.5 and 45.24 ?g/m3 for PM10. For the PM2.5, weak negative correlation was obtained between PM and precipitation (r = -0.462), strong negative correlation with relative humidity (r = -0.799) and weak positive correlation between temperature (r = 0.456). PM10 showed weak negative correlation between PM with temperature (r = -0.061) and precipitation (r = -0.022), and strong positive correlation between PM and relative humidity (r = 0.130).

Download Full-text

Spatial Variation of the Relationship between PM2.5Concentrations and Meteorological Parameters in China

BioMed Research International ◽

10.1155/2015/684618 ◽

2015 ◽

Vol 2015 ◽

pp. 1-15 ◽

Cited By ~ 10

Author(s):

Gang Lin ◽

Jingying Fu ◽

Dong Jiang ◽

Jianhua Wang ◽

Qiao Wang ◽

...

Keyword(s):

Negative Correlation ◽

Meteorological Parameters ◽

Semiarid Region ◽

Strong Positive Correlation ◽

Annual Average ◽

Strong Negative Correlation ◽

Positive Correlation ◽

Humid Region ◽

The Relationship ◽

Warm Temperate

Epidemiological studies around the world have reported that fine particulate matter (PM2.5) is closely associated with human health. The distribution of PM2.5concentrations is influenced by multiple geographic and socioeconomic factors. Using a remote-sensing-derived PM2.5dataset, this paper explores the relationship between PM2.5concentrations and meteorological parameters and their spatial variance in China for the period 2001–2010. The spatial variations of the relationships between the annual average PM2.5, the annual average precipitation (AAP), and the annual average temperature (AAT) were evaluated using the Geographically Weighted Regression (GWR) model. The results indicated that PM2.5had a strong and stable correlation with meteorological parameters. In particular, PM2.5had a negative correlation with precipitation and a positive correlation with temperature. In addition, the relationship between the variables changed over space, and the strong negative correlation between PM2.5and the AAP mainly appeared in the warm temperate semihumid region and northern subtropical humid region in 2001 and 2010, with some localized differences. The strong positive correlation between the PM2.5and the AAT mainly occurred in the mid-temperate semiarid region, the humid, semihumid, and semiarid warm temperate regions, and the northern subtropical humid region in 2001 and 2010.

Download Full-text

Korelasi Hemoglobin A1c dengan Hemoglobin dan Laju Filtrasi Glomerulus Penderita Diabetes dengan dan tanpa Komplikasi Gagal Ginjal Kronik di Bogor

Media Penelitian dan Pengembangan Kesehatan ◽

10.22435/mpk.v30i4.3174 ◽

2020 ◽

Vol 30 (4) ◽

Author(s):

Srilaning Driyah ◽

Julianty Pradono

Keyword(s):

Blood Sugar ◽

Negative Correlation ◽

Hemoglobin A1c ◽

Complete Data ◽

Bivariate Analysis ◽

Strong Positive Correlation ◽

Data Set ◽

Positive Correlation ◽

Weak Positive Correlation ◽

Weak Negative Correlation

Diabetes mellitus type 2 (T2DM) is a chronic disease and can cause complications, one of which is decreased kidney function. Anemia is a complication of T2DM, especially if it is accompanied by renal disorders. The aim of this study was to show the relationship between HbA1c and hemoglobin (Hb), hematocrit (HCT), creatinine, and glomerular filtration rate (GFR) in T2DM respondents with and without complications of chronic renal failure (CRF). This study used a subset of the Non-Communicable Diseases cohort data set by the Center for Public Health Efforts in Central Bogor sub-district, Bogor City. The research design was an analytic observational study. Respondents were all T2DM with complete data as much as 303 people. The respondents diagnosed based on the results of previous blood sugar tests. The inclusion criteria were people with T2DM who had complete data (HBA1c, Hb, HCT, and creatinine). Bivariate analysis between the dependent variable (T2DM with or without CRF) and the independent variable (HbA1c, Hb, HCT, creatinine, and LFG) used the Spearman correlation. The results showed a strong positive correlation between HbA1c and Hb (r = 0,66, p<0,05) and HCT (r = 0,67, p<0,05)in T2DM respondents with CRF, but there is no correlation between HbA1c and creatinine and LFG. In T2DM without CRF there is a weak positive correlation between HbA1c and Hb (r = 0,26, p<0,05) and HCT (r = 0,21, p<0,05), a negative correlation between HbA1c and creatinine (r = -0,29, p<0,05), and there is a weak positive correlation between HbA1c and LFG (r = 0,24, p<0,05 ). The conclusion is that controlling blood sugar by examining HbA1c levels shows a strong positive correlation with Hb levels and HCT in T2DM with CRF and a weak negative correlation with LFG in T2DM without CRF. This difference is not in accordance with the existing theory Abstrak Diabetes melitus tipe 2 (DMT2) merupakan penyakit kronik dan dapat menimbulkan komplikasi, salah satunya adalah penurunan fungsi ginjal. Anemia merupakan komplikasi DMT2 khususnya jika disertai gangguan renal. Tujuan penelitian ini menunjukkan hubungan hemoglobin A1c (HbA1c) dengan hemoglobin (Hb), hematokrit (HCT), kreatinin, dan laju filtrasi glomerulus (LFG) pada responden DMT2 dengan dan tanpa komplikasi gagal ginjal kronik (GGK). Penelitian ini menggunakan subset data kohor penyakit tidak menular (PTM) yang dilakukan oleh Puslitbang Upaya Kesehatan Masyarakat di Kecamatan Bogor Tengah, Kota Bogor. Desain penelitian adalah studi observasional analitik. Responden adalah semua penderita DMT2 dengan data lengkap sebanyak 303 orang yang didiagnosis berdasarkan hasil pemeriksaan gula darah sebelumnya. Kriteria inklusi adalah penderita DMT2 yang memiliki data lengkap (HbA1c, Hb, HCT, dan kreatinin). Analisis bivariat antara variabel dependen (DMT2 dengan atau tanpa GGK) dengan variabel independen (HbA1c, Hb, HCT, kreatinin dan LFG) mengunakan korelasi Spearman. Hasil penelitian menunjukkan pada responden DMT2 dengan GGK terdapat korelasi positif yang kuat antara HbA1c dengan Hb (r = 0,66, p<0,05) dan HCT (r = 0,67, p<.0,05). Sedangkan HbA1c dengan kreatin dan LFG tidak terdapat korelasi. Pada DMT2 tanpa GGK terdapat korelasi positif lemah antara HbA1c dengan Hb (r = 0,26, p<0,05 ) dan HCT (r = 0,21, p<0,05), terjadi korelasi negatif antara HbA1c dengan kreatinin sebesar (r = -0,29, p<0,05), dan terdapat korelasi positif lemah antara HbA1c dengan LFG ( r = 0,24, p<0,05 ). Simpulan yang dapat diambil adalah pengontrolan gula darah dengan pemeriksaan kadar HbA1c menunjukkan korelasi positif yang kuat dengan kadar Hb dan HCT pada DMT2 dengan GGK dan korelasi negatif lemah dengan LFG pada DMT2 tanpa GGK. Perbedaan tersebut belum sesuai teori yang ada.

Download Full-text

Influence of Meteorological Parameters on Air Quality at Hashemite University, Jordan

Current World Environment ◽

10.12944/cwe.12.2.04 ◽

2017 ◽

Vol 12 (2) ◽

pp. 211-221

Author(s):

Sana’a Odata ◽

Abu- Allabanb ◽

Khitam Odibatb

Keyword(s):

Air Pollution ◽

Air Quality ◽

Wind Speed ◽

Relative Humidity ◽

Air Temperature ◽

Negative Correlation ◽

Air Pollutants ◽

Meteorological Parameters ◽

Positive Correlation ◽

Hashemite University

Four threshold air pollutants (SO2, NO, NO2, and O3) in addition to meteorological parameters were monitored at the Campus of the Hashemite University (HU) for two years (1/1/2012 through 30/12/013). Correlations between air pollution and meteorological parameters were derived. The results showed that O3 has a positive correlation with air temperature, wind speed and wind direction, but has a negative correlation with the relative humidity (RH). SO2 was found to have a negative correlation with the RH and wind speed, but positive correlation with air temperature. NO has negative correlation with air temperature, RH, and wind speed. And finally, NO2 has a negative correlation with RH and wind speed, but it has positive correlation with air temperature. Justify the reasons in brief with recommendations to improve the air quality

Download Full-text

Reproductive performance of spiralling whitefly on guava and impact of weather parameters on its immature stages

SAARC Journal of Agriculture ◽

10.3329/sja.v15i2.35165 ◽

2018 ◽

Vol 15 (2) ◽

pp. 207-214

Author(s):

I Hossain ◽

MMH Khan ◽

SMH Jahan

Keyword(s):

Relative Humidity ◽

Negative Correlation ◽

Reproductive Performance ◽

Significant Positive Correlation ◽

Instar Nymph ◽

Maximum Temperature ◽

Immature Stages ◽

Positive Correlation ◽

Aleurodicus Dispersus ◽

Weather Parameters

The study was conducted to know the reproductive performance of spiralling whitefly on guava. Number of colony, eggs, 1st instar, 2nd instar, 3rd instar and 4th instar nymphs per five leaves ranged from 6 to 15, 8 to 32, 0 to 44, 0 to 22, 0 to 45 and 0 to 28, respectively. Maximum number of adults and nymphs were found in the month of January. Highest longevity of Aleurodicus dispersus (21.5 days) was recorded in adult while the lowest was in 2nd instar nymph (6.4 days). The number of colony/leaf and number of 3rd and 4th instar nymphs of A. dispersus had significant positive correlation with minimum and maximum temperature while non-significant positive correlation is observed between the number of egg/colony, the number 1st and 2nd instar nymphs with minimum and maximum temperature. A. dispersus showed nonsignificant positive correlation with minimum and maximum relative humidity regarding number of colony/leaf, 2nd instar nymph while nonsignificant negative correlation with 4th instar nymph.SAARC J. Agri., 15(2): 207-214 (2017)

Download Full-text

The effects of cardiac rehabilitation on haemodynamic parameters measured by impedance cardiography in patients with coronary artery disease

Vojnosanitetski pregled ◽

10.2298/vsp200810126s ◽

2020 ◽

pp. 126-126

Author(s):

Milovan Stojanovic ◽

Marina Deljanin-Ilic ◽

Stevan Ilic ◽

Dejan Petrovic ◽

Bojan Ilic

Keyword(s):

Coronary Artery Disease ◽

Negative Correlation ◽

Impedance Cardiography ◽

Exercise Stress ◽

Strong Positive Correlation ◽

Physical Strain ◽

Strong Negative Correlation ◽

Positive Correlation ◽

Strain Tolerance ◽

Artery Disease

Background / Aim. Well-organized cardiovascular rehabilitation (CVR) reduces cardiovascular burden by influencing cardiovascular risk factors, improving the quality of life and reducing mortality and hospital readmission. However, its effects on hemodynamic status are largely unknown. The aim of our study was to evaluate the influence of three-week CVR program on hemodynamic status and to investigate if there is a correlation between physical strain tolerance and hemodynamic parameters measured by impedance cardiography (ICG) before and after CVR program in patients with coronary artery disease. Methods. Fifty-two patients attended a three-week CVR program. At the beginning and at the end of rehabilitation program laboratory tests, exercise stress tests (EST) and ICG measurements were taken. Results. Patients showed better strain tolerance on the second exercise stress test (EST2) by achieving higher strain level (Z=2,315; p=0,021) and longer duration of test (Z=2,305; p=0,021). There was a strong positive correlation between the level of EST2 and cardiac output (CO) (r=0,538; p<0,001) and stroke volume (SV) (r=0,380; p=0,017) on the second ICG (ICG2). Also, there was a strong negative correlation between EST2 level and systemic vascular resistance (SVR) (r=-0,472; p=0,002) and SVR index (SSVRI) (r=-0,407; p=0,010) on ICG2. There was a strong positive correlation between EST2 duration and CO (r=0.517; p=0.001) as well as between EST2 duration and SV (r=0.340; p=0.034), and a strong negative correlation between EST2 duration and SVR (r=-0.504; p=0.001) as well as between EST2 duration and SVRI (r=-0.448; p=0.004), according to ICG2. Conclusion. Our study showed that a well-designed CVR program can lead to better physical strain tolerance. Furthermore, CVR led to a significant positive correlation between EST and cardiac output as well as between EST and stroke volume measured by ICG. On the other hand, there was a significant negative correlation between EST and vascular related parameters according to ICG at the end of the CVR program.

Download Full-text

Abundance, damage severity and management of guava mealybug, ferrisia virgata ckll

SAARC Journal of Agriculture ◽

10.3329/sja.v16i2.40260 ◽

2019 ◽

Vol 16 (2) ◽

pp. 73-82

Author(s):

MMH Khan

Keyword(s):

Relative Humidity ◽

Leaf Area ◽

Negative Correlation ◽

Untreated Control ◽

Soap Solution ◽

Maximum Temperature ◽

Water Spray ◽

Positive Correlation ◽

Middle Leaf ◽

Percent Mortality

The research was carried out to know the abundance and damage severity of mealybug on sarupkathi variety of guava and to evaluate the efficacy of jet powder and Fighter 2.5EC for suppressing populations of mealybug during January to October 2014. Results revealed that the highest number of guava mealybug was observed on middle leaf (42/leaf) while the lowest number was on lower leaf (13/leaf). The highest percent leaf area covered by mealybug was found on middle leaf (78%) while the lowest was on fruit (18%). Maximum temperature and relative humidity had a positive correlation on the mealybug population while the rainfall showed a negative correlation. The highest percent mortality was observed in T2 treatment (Jet powder applied @ 5.0 g L-1 of water) at 24 HAT (hours after treatment) (86.05%) and 48 HAT (93.83%), respectively. At 72 HAT, the highest percent mortality was observed T3 treatment (Jet powder applied @ 7.5 g L-1 of water). In case of insecticidal control, the highest percent mortality was observed in T2 (100%) and T3 (100%) treatments, respectively followed by T1 (98.03%) at 24 HAT. Similar trends were also observed among all treatments at 48 HAT and 72 HAT, respectively. No significant differences were found among three doses of Fighter 2.5EC. The lowest percent mortality of mealybug population was found in T4 (Water spray forcibly) at 24 HAT, 48 HAT and 72 HAT, respectively. No mortality was recorded in untreated control at different HAT in both application of soap solution and insecticides. SAARC J. Agri., 16(2): 73-82 (2018)

Download Full-text

Long-Term Performance Assessment of Low-Cost Atmospheric Sensors in the Arctic Environment

Sensors ◽

10.3390/s20071919 ◽

2020 ◽

Vol 20 (7) ◽

pp. 1919 ◽

Cited By ~ 2

Author(s):

Federico Carotenuto ◽

Lorenzo Brilli ◽

Beniamino Gioli ◽

Giovanni Gualtieri ◽

Carolina Vagnoli ◽

...

Keyword(s):

Particulate Matter ◽

Relative Humidity ◽

Air Temperature ◽

Meteorological Parameters ◽

Low Cost ◽

Absolute Error ◽

Atmospheric Composition ◽

The Arctic ◽

Svalbard Archipelago ◽

Arctic Environment

The Arctic is an important natural laboratory that is extremely sensitive to climatic changes and its monitoring is, therefore, of great importance. Due to the environmental extremes it is often hard to deploy sensors and observations are limited to a few sparse observation points limiting the spatial and temporal coverage of the Arctic measurement. Given these constraints the possibility of deploying a rugged network of low-cost sensors remains an interesting and convenient option. The present work validates for the first time a low-cost sensor array (AIRQino) for monitoring basic meteorological parameters and atmospheric composition in the Arctic (air temperature, relative humidity, particulate matter, and CO2). AIRQino was deployed for one year in the Svalbard archipelago and its outputs compared with reference sensors. Results show good agreement with the reference meteorological parameters (air temperature (T) and relative humidity (RH)) with correlation coefficients above 0.8 and small absolute errors (≈1 °C for temperature and ≈6% for RH). Particulate matter (PM) low-cost sensors show a good linearity (r2 ≈ 0.8) and small absolute errors for both PM2.5 and PM10 (≈1 µg m−3 for PM2.5 and ≈3 µg m−3 for PM10), while overall accuracy is impacted both by the unknown composition of the local aerosol, and by high humidity conditions likely generating hygroscopic effects. CO2 exhibits a satisfying agreement with r2 around 0.70 and an absolute error of ≈23 mg m−3. Overall these results, coupled with an excellent data coverage and scarce need of maintenance make the AIRQino or similar devices integrations an interesting tool for future extended sensor networks also in the Arctic environment.

Download Full-text

Simultaneous formation of chymopapain inhibitor activity and cubical crystals in tomato leaves

Canadian Journal of Botany ◽

10.1139/b80-123 ◽

1980 ◽

Vol 58 (8) ◽

pp. 1000-1003 ◽

Cited By ~ 12

Author(s):

Carolyn Pruett Akers ◽

Johan E. Hoff

Keyword(s):

Relative Humidity ◽

Continuous Illumination ◽

Strong Positive Correlation ◽

Inhibitor Activity ◽

Mesophyll Cells ◽

Simultaneous Formation ◽

Positive Correlation ◽

Leaf Mesophyll ◽

Crystal Volume

Chymopapain inhibitor activity is found in young, excised tomato leaflets exposed to continuous illumination at 30 °C and 50 to 60% relative humidity. Inhibitor activity is accompanied by the formation of cubical crystals in the leaf mesophyll cells. As chymopapain inhibitor activity increases, crystals increase in number and volume. There is a strong positive correlation between crystal volume and inhibitor activity.

Download Full-text

Meteorological parameter anomalies and anomalous radio propagation over Nigeria

Nigeria Journal of Pure and Applied Physics ◽

10.4314/njpap.v9i1.7 ◽

2020 ◽

Vol 9 (1) ◽

pp. 34-50

Author(s):

I. Emmanuel ◽

K.D. Adedayo ◽

B. Adeyemi ◽

O.S. Ojo

Keyword(s):

Spatial Distribution ◽

Relative Humidity ◽

Negative Correlation ◽

Meteorological Parameter ◽

Radio Propagation ◽

Monthly Variation ◽

Wet Season ◽

Strong Negative Correlation ◽

Positive Correlation ◽

Seasonal Movement

Distribution and variation of anomalous radio propagation, temperature and relative humidity anomalies were obtained and analyzed using six years (2010-2015) Era interim data. Seasonal spatial distribution of refractivity gradient and its components were analyzed. The result showed that about 90% of wet component contributed to the variation of refractivity gradient. Highest range of refractivity gradients and its wet components were obtained during the wet season. The result of correlation between ducting occurrence and temperature showed strong negative correlation except in Lagos where positive correlation of 3% was observed. However, positive correlation which ranges between 39% and 70% exist between duct occurrence and relative humidity except in Lagos in Nigeria. Refractivity gradients, relative humidity anomaly and temperature experience a monthly variation. These variations can be attributed to the seasonal movement of inter-tropical discontinuity (ITD) across Nigeria. Keywords: anomalous, anomaly, correlation, ITD

Download Full-text

Revealing Millennials’ Networks in Discussing Maritime Issues within the Triple Helix of University-Industry-Government

IKAT The Indonesian Journal of Southeast Asian Studies ◽

10.22146/ikat.v4i2.60912 ◽

2021 ◽

Vol 4 (2) ◽

pp. 171

Author(s):

Tatak Setiadi

Keyword(s):

Human Resources ◽

Negative Correlation ◽

Triple Helix ◽

Supply And Demand ◽

Closeness Centrality ◽

Eigenvector Centrality ◽

Positive Correlation ◽

Weak Negative Correlation ◽

University Industry ◽

Moderate Positive Correlation

Millennials' networks within the triple helix of University-Industry-Government show unusual communication structures and are challenging to be revealed. Using the direct and online written interview with the millennials found about 817 relations (edges) to 347 actors (nodes) in total. Analysis by Social Network Analysis (SNA) found: (1) the dominant issues of the maritime human resources are about future work prospects and specialties field, imbalance of supply and demand of maritime human resources, and improvement needed of industry's human resources (2) the dominant skill issue is capacity building and continuous learning, (3) the highest degree of centrality and closeness centrality has resulted from Industry, (4) the highest betweenness centrality and eigenvector centrality has resulted from University, (5) there is moderate positive correlation of ages to closeness centrality and weak negative correlation to eigenvector centrality, (6) there is a moderate positive correlation of education levels to closeness centrality, (7) there is a weak negative correlation of gender to eigenvector centrality, and (8) there is a statist relation of the triple helix in discussing maritime issues.

Download Full-text