scholarly journals EFFECTS OF METEOROLOGICAL VARIABLES ON Pinus caribaea GROWTH IN DIFFERENT AGES AT THE AMAZON REGION.

FLORESTA ◽  
2022 ◽  
Vol 52 (1) ◽  
pp. 113
Author(s):  
Gabriel Miranda Lima de Lima ◽  
Nei Sebastião Braga Gomes ◽  
Thiago Augusto da Cunha ◽  
Afonso Figueiredo Filho
Keyword(s):  
Relative Humidity ◽  
Pearson Correlation ◽  
Meteorological Variables ◽  
Pinus Caribaea ◽  
Annual Increment ◽  
Positive Correlation ◽  
Average Temperature ◽  
Different Ages ◽  
One Year ◽  
The Impact

This study compares the impact of five meteorological variables on the diametric growth of Pinus caribaea var. hondurensis Barrett & Golfari in Vilhena, Rondônia. One thousand nine hundred sixty-eight trees were evaluated and classified at different ages: 600 trees were one year old; 600 trees were two years old; 768 trees were 13 years. The diameter measurement at the soil level (SL) was conducted in young stands between one and two years old. In the stand with 13 years old, the diameter was measured at 1.3 m (DCH). Using a Pressler borer, 50 increment cores were removed at DCH to measure the tree rings in LINTAB™ 6. The diametric growth was evaluated through the Periodic Increment (PI) for young stands and Current Annual Increment (CAI) for adult stands. The following variables were considered: average temperature (°C), precipitation (mm), solar radiation (Kj m-²), real evapotranspiration (mm), and maximum relative humidity (%). The Pearson Correlation Coefficient (r) proposed by Callegari-Jacques and the coefficient of variation (CV%) were used to establish the relationship between growth and meteorological variables. For young stands, the variables with higher positive correlation were real evapotranspiration and maximum relative humidity. However, the variable with a higher positive correlation in adult stands was average temperature, demonstrating a strong correlation until the sixth year of the species. 

scholarly journals Phenological pattern reproductive of Attalea speciosa Mart ex Spreng. in pasture area in the central region of Rondônia.

FLORESTA ◽  
2020 ◽  
Vol 50 (2) ◽  
pp. 1335 ◽  
Author(s):  
Jhonatas Cortes Rosa ◽  
Andreza Pereira Mendonça ◽  
Claudemir Carlos Ribeiro ◽  
Sylviane Beck Ribeiro
Keyword(s):  
Relative Humidity ◽  
Climatic Factors ◽  
Pearson Correlation ◽  
Meteorological Variables ◽  
Average Temperature ◽  
Palm Trees ◽  
Monthly Total Precipitation ◽  
Monthly Total ◽  
Pasture Area ◽  
Reproductive Events

The objective of this work was to evaluate the phenology of the babassu (Attalea speciosa Mart ex Spreng.), aiming to subsidize information for non - timber management of the species in pasture area. For 48 months, the phenological patterns of babassu were studied, relating them to meteorological variables such as monthly average temperature, monthly total precipitation, relative humidity of the medium air and photoperiod. A total of 130 adult palm trees from natural regeneration were monitored in a pasture in the municipality of Ji-Paraná, RO, from January 2012 to December 2015. The data were analyzed by means of the activity indexes, the relation of the phenophases and meteorological variables by means of Pearson correlation. The population synchrony index was also evaluated. During the study, the population of Attalea speciosa showed flowering asynchronously in the population. In the process of formation and maturation of the fruits of the babassu, it was possible to observe that the time of total development of the fruits was in average 254 days. In young infructescence, the most influential climatic factors were temperature and photoperiod. In the green infructescence, climatic factors such as precipitation, relative humidity and photoperiod influenced negatively. The presence of mature infructescence occurred throughout the year, with the highest intensities in the month of November, and its activity related to the increase in temperature and duration of days. Phenological monitoring of babassu allowed to identify the intensity and predictability of reproductive events, thus enabling information to be provided to the plans for the sustainable exploitation of the species in pasture in the municipality of Ji-Paraná.

scholarly journals Characteristics and Drivers of Reference Evapotranspiration in Hilly Regions in Southern China

Water ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1914 ◽  
Author(s):  
Liu ◽  
Liu ◽  
Chen ◽  
Labat ◽  
Li ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Reference Evapotranspiration ◽  
Southern Oscillation ◽  
Southern China ◽  
Sensitivity Coefficient ◽  
Meteorological Variables ◽  
The West ◽  
Average Temperature ◽  
Sunshine Hours ◽  
The Impact

This paper has adopted related meteorological data collected by 69 meteorological stations between 1951 and 2013 to analyze changes and drivers of reference evapotranspiration (ET0) in the hilly regions located in southern China. Results show that: (1) ET0 in southern China’s hilly regions reaches its maximum in summer and its minimum in winter, and that the annual ET0 shows an increasing trend. ET0 happened abrupt change due to the impact of abrupt meteorological variables changes, and the significant year of mutation were 1953, 1964 and 2008. Most abrupt changes of ET0 in meteorological stations occurred in the 1950s and 1960s. (2) The low value of ET0 was mainly captured in high-altitude areas. Spatially, the ET0 in the east was higher than that in the west. With the exception of a handful of stations, the trend coefficients of ET0 were all positive, exhibiting a gradual rise. Changes in ET0 in the east were much more sensitive than that in the west. Since ET0 was affected by the cyclical changes in relative humidity, short-period oscillations were observed in all these changes. (3) In general, the ET0 was negatively correlated with relative humidity, and positively correlated with temperature and sunshine percentage. ET0 is most sensitive to changes in average temperature, with a sensitivity coefficient of 1.136. ET0 showed positive sensitivity to average temperature and sunshine hours, which were notable in the northeastern, and uniform in the spatial. ET0 showed negatively sensitivity to relative humidity, and the absolute value of sensitivity coefficient in the northwestern is smaller. The highest contribution to ET0 is the average temperature (6.873%), and the total contribution of the four meteorological variables to the change of ET0 is 7.842%. The contribution of average temperature, relative humidity, and sunshine hours to ET0 is higher in the northern and eastern, northern, northern and eastern areas, respectively. Climate indexes (Western Pacific Index (WP), Southern Oscillation Index (SOI), Tropical Northern Atlantic Index (TNA), and El Niño-Southern Oscillation (ENSO)) were correlated with the ET0. In addition, the ET0 and altitude, as well as the latitude and longitude were also correlated with each other.

scholarly journals Impact of meteorological factors on number of new COVID-19 cases in Pune

2021 ◽  
Vol 8 (9) ◽  
pp. 4307
Author(s):  
Saurabh Mahajan ◽  
Ravi Devarakonda ◽  
Gautam Mukherjee ◽  
Nisha Verma ◽  
Kumar Pushkar
Keyword(s):  
Meteorological Data ◽  
Secondary Data ◽  
Significant Negative Correlation ◽  
Meteorological Variables ◽  
Strong Positive Correlation ◽  
Daily Number ◽  
Average Temperature ◽  
Time Period ◽  
Indian Meteorological Department ◽  
The Impact

Background: Coronaviruses are a family of viruses that can result in different types of illnesses, most commonly, as Severe acute respiratory syndrome (SARS). Researches have shown that the atmospheric variables and the density of population have affected the transmission of the disease. Meteorological variables like temperature, humidity among others have found to affect the rise of pandemic in positive or negative ways.  Respiratory virus illnesses have shown seasonal variability since the time they have been discovered and managed. This study investigated the relationship between the meteorological variables of temperature, humidity and precipitation in the spread of COVID-19 disease in the city of Pune.Methods: This record based descriptive study is conducted after secondary data analysis of number of new cases of COVID-19 per day from the period 01 May to 24 December 2020 in Pune. Meteorological data of maximum (Tmax), minimum (Tmin) and daily average temperature (Tavg), humidity and precipitation were daily noted from Indian meteorological department website. Trend was identified plotting the daily number of clinically diagnosed cases over time period. Pearson’s correlation was used to estimate association between meteorological variables and daily detected fresh cases of COVID-19 disease.  Results: Analysis revealed significant negative correlation (r=-0.3563, p<0.005) between daily detected number of cases and maximum daily temperature. A strong positive correlation was seen between humidity and daily number of cases (r=0.5541, p<0.005).Conclusions: The findings of this study will aid in forecasting epidemics and in preparing for the impact of climate change on the COVID epidemiology through the implementation of public health preventive measures.

scholarly journals The impact of climate change on the resin productivity of dammar tree (Agathis alba) in Inamosol subdistrict, West Seram district, Maluku-Indonesia

2021 ◽  
Vol 883 (1) ◽  
pp. 012079
Author(s):  
J M Matinahoru
Keyword(s):  
Climate Change ◽  
Relative Humidity ◽  
Sampling Technique ◽  
Climate Data ◽  
Purposive Sampling ◽  
Impact Of Climate Change ◽  
Average Temperature ◽  
Change Factors ◽  
Temperature And Humidity ◽  
The Impact

Abstract This research was aimed to determine the impact of climate change on the resin productivity of dammar tree. This research will be useful as data and information for farmers and government to maintain the resin of dammar tree to be optimal and sustainable in production. This research was conducted in Inamosol Sub-district, West Seram District, Maluku Indonesia, during September-October 2020. Village and farmer samples were determined by purposive sampling technique. The selected villages were Honitetu, Hukuanakota and Rambatu. Furthermore, from each village, It was ten farmers to select for interviews and filling the questionnaire. The results showed that the average resin production of farmers in 2019 was 904.2 kg/farmer, while in 2020 was 523.7 kg/farmer. This means that it occurred a decline in resin production in 2020 about 42.08 % for each farmer—the leading cause of the decreased production as climate change factors, namely rainfall, temperature and humidity. Based on climate data of West Seram District in 2019 indicated that rainfall has occurred during six months with an average temperature of 27 °C and relative humidity of 82 %. Meanwhile, in 2020 the rainfall occurs for nine months with an average temperature of 26.5 °C, and relative humidity of 85 %.

scholarly journals Impact of climatic variables on the population of Trichoderma sp. in the rhizosphere of black pepper

2021 ◽  
Vol 22 (1&2) ◽  
pp. 45-48
Author(s):  
Manju Mohan ◽  
Surendra Gopal
Keyword(s):  
Relative Humidity ◽  
Rhizosphere Soil ◽  
Black Pepper ◽  
Soil Samples ◽  
Climatic Variables ◽  
Monthly Interval ◽  
Trichoderma Sp ◽  
Weather Parameters ◽  
One Year ◽  
The Impact

The present study was undertaken with an objective to determine the impact of climatic variables on the population of Trichoderma sp. in the rhizosphere of black pepper. Rhizosphere soil samples were obtained from pepper plantation at a monthly interval for one year. Trichoderma sp. population were assessed at monthly interval along with weather parameters from  July, 2015  to June,2016. The number of Trichoderma sp. were maximum in July and lowest in June. The correlation between weather parameters on the population of Trichoderma sp. revealed that the population increased with an increase in rainfall and relative humidity, whereas it decreased by an increase in temperature. The results of the present studies showed that climatic variables affect the population of Trichoderma sp. in the rhizosphere of black pepper. However, further studies are needed to confirm it.

scholarly journals Selection of high-yielding varieties and hybrids of pan patty squash, determining their most favorable planting dates

2021 ◽  
Vol 258 ◽  
pp. 04024
Author(s):  
Shavkat Durkhodjaev ◽  
Sohibjon Islamov ◽  
Tulganoy Kenjaeva ◽  
Abdulaziz Tojiboyev
Keyword(s):  
Seed Germination ◽  
Weather Conditions ◽  
Climatic Conditions ◽  
High Yield ◽  
Planting Dates ◽  
Average Temperature ◽  
The Family ◽  
High Yielding Varieties ◽  
One Year ◽  
The Impact

In this article, the results of research on the cultivation of patty pan squash in the climatic conditions of Uzbekistan, Planting for different periods and its growth, development, yield, as well as the impact of weather conditions were presented. Squash is a one-year plant of the family of zucchini, mainly shrub, rarely found in the form of a whip. The results showed that average yield of “White-13” control was 16 tons/ha, and it was 17 tons/ha in “Solnyshko”. Furthermore, “NLO White” and “Umberall” had a high yield compared to the other varieties and hybrids, accounted for 15 tons/ha and 15.1 tons/ha, respectively. The highest average temperature during seed germination was found in 16 august, which was 30.3°C, whereas the lowest average temperature was 18.6°C in 1st April. The results showed that 4 days were required to reach 10% of seed germination in the period April 16 and May 1, however, 10% of seed germination in July 1 and 16th took 6 days. Furthermore, the least days for 75% of seed, germination was observed in the period of May 1, accounted for 8 days, and the rest of the period was the same.

scholarly journals Quality of life in epilepsy

2017 ◽  
Vol 5 (2) ◽  
pp. 452 ◽  
Author(s):  
Prem Singh ◽  
Achyut Kumar Pandey
Keyword(s):  
Quality Of Life ◽  
Pearson Correlation ◽  
Tertiary Care ◽  
P Value ◽  
Care Hospital ◽  
Lower Education Level ◽  
One Year ◽  
Patients With Epilepsy ◽  
The Impact

Background: The quality of life (QOL) evaluation is a relatively new measure to evaluate the outcome of epilepsy. Many factors influence the quality of life of people with epilepsy, including seizure severity, stigma, fear, and the presence of cognitive or psychiatric problems. QOL is influenced by biological factors as well as cultural, social and religious beliefs and values. This study was planned to find out the impact of epilepsy on quality of life of epileptic patients.Methods: The study was conducted in the epilepsy clinic of department of neurology at a tertiary care hospital over a period of one year.101 patients were included after fulfilling the inclusion criteria. All the patients seeking treatment in the OPD were screened, assessed and then all procedures were fully explained to them. History regarding name, age sex, socio-demographic profile and detailed history regarding seizure disorder was taken from both the patient and the reliable informant. Bengali version of QOLIE-9 was used to assess the quality of life.Results: One hundred and one patients with epilepsy consisting of 70 men (69.3%) and 31 women (30.7%) were included. Their ages ranged from 15 to 52, the mean age being 26.17 (SD = 7.84). Out of the 101 patients, 65 patients (64.4%) were suffering from partial epilepsies and 36 patients (35.6%) were suffering from generalized epilepsies. Mean QOLIE-9 total scores were 16.66, 19.74, 20.13 and 24.00 in married, widows, unmarried and separated individuals respectively. The differences in the means were statistically significant on ANOVA (p value 0.002). Mean QOLIE-9 total scores were 27.75, 19.64, 19.65, 18.14 and 18.00 in primary, secondary, higher secondary, graduate and postgraduate individuals respectively. The differences were highly significant statistically on ANOVA (p value<0.001). Frequency of seizures per month was positively correlated with QOLIE-9 total scores (Pearson Correlation 0.622) and was highly statistically significant (p value<0.001).Conclusions: Frequent seizures, lower education level and single status are associated with lower quality of life in persons with epilepsy.

scholarly journals Climatology of Discomfort Index for Decade in Bandar Lampung, Indonesia

2019 ◽  
Author(s):  
Lailatus Siami ◽  
Anindita Ramadhani
Keyword(s):  
Climate Change ◽  
High Temperature ◽  
Relative Humidity ◽  
Secondary Data ◽  
Average Temperature ◽  
Change Impact ◽  
Weather Stations ◽  
Discomfort Index ◽  
The Impact ◽  
The City

Climate change as certain phenomena has occurred globally and the impact feels by people especially for those who live on the island. Weather pattern shifting is one of the evidence of climate change impact, and many scientists are still trying to prove it. Weather affected by a combination of temperature, relativity humidity, etc. The fact that those parameters closely related to the need of health especially temperature and relative humidity and well-known thermal scale grouped in a range called discomfort index (DI). This study aims to analyze the outdoor condition in Bandar Lampung by figure out discomfort index. Weather parameter collected from secondary data of Teluk Betung weather station from 2007 – 2017 in three levels of high, average and low condition. In that period, temperature and humidity in Bandar Lampung relatively stable between 20-35∘C and 50-100%. In general, the city encountered with varies conditions by high temperature above 29∘C and high relative humidity more than 85%. Meanwhile, DI changes from year to year are not significantly occurred that indicates in high temperature, average and low weather are everyone feels severe stress, more than 50% of people feel discomfort, and comfortable condition. Nevertheless, every year it already shows an uncomfortable situation especially in high temperature and even at an average temperature. Furthermore, the study needs to compare with other weather stations in Bandar Lampung.

Optimum silkworm feeding rates

2020 ◽  
Vol 02 (03) ◽  
pp. 30-34
Author(s):  
Dursun Miri Adigozalova ◽  
◽  
Turay Fakhraddin Isgandarov ◽  
Keyword(s):  
Relative Humidity ◽  
Transition Process ◽  
Airflow Rate ◽  
Feeding Rates ◽  
Factors Affecting ◽  
Average Temperature ◽  
Inhibition Of Growth ◽  
Different Ages ◽  
Age Appropriate ◽  
Digestive Disorders

The article notes that non-regulation of temperature and relative humidity in silkworm feeds can lead to malnutrition, digestive disorders, edema and inhibition of growth, as well as to a number of diseases. To avoid this, the heat in the greenhouse should be adjusted according to optimal temperature norms. In the first years I-II-III the average temperature in the greenhouse is 25.5° C, in IV-23.5 ° C, in V-24 ° C. Normal relative humidity should be adjusted during feeding in the greenhouse to avoid the above. In the first I-II-III years it is normal when the relative humidity in the greenhouse is 70%, in the IV age 70% and in the V age 65%. If the temperature and humidity are not in the normal range during the cocoon transition process, the turnover breaks, resulting in loss of product. The normal temperature during the cocoon transition process should be 23.50 C and the relative humidity should be 65%. One of the main factors affecting the yield of silkworms is the correct regulation of field norms at different ages. If an age-appropriate area is not created, the silkworm becomes ill, leading to malnutrition. Normal field units (per 1 box of silkworms) were assigned at different ages: I year-2.5 m2, II year 6-7 m2, III year 15-17 m2, IV year 30-35 m2, V year 55-60 m2. The amount of greenhouse gases, the flow rate and the volume of air should be normal during feeding in the greenhouse. Therefore, the greenhouse air must be changed frequently during feeding. The presence of toxic gases, such as ammonia, hydrogen sulfide, is unacceptable. The speed or lack of airflow is harmful to the silkworm. During feeding, the airflow rate is 0.1 m/s. When feeding of silkworms is applying in accordance with established norms, biological and technological indicators of silkworms are high. Key words: Bombyxi mori, silk, temperature, relative humidity

scholarly journals Hygrothermal Risk in Museum Buildings Located in Moderate Climate

Energies ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 344 ◽  
Author(s):  
Joanna Ferdyn-Grygierek ◽  
Jan Kaczmarczyk ◽  
Monika Blaszczok ◽  
Piotr Lubina ◽  
Piotr Koper ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Indoor Air ◽  
Environmental Parameters ◽  
Museum Collections ◽  
Indoor Temperature ◽  
Air Temperatures ◽  
One Year ◽  
Air Conditioning Systems ◽  
The Impact ◽  
Moderate Climate

Works of art are sensitive to environmental factors—mainly temperature and relative humidity—which, when stable, are generally recommended as ideal protection conditions, but in historical museum buildings, the required conditions are difficult to maintain, due to a lack of adequate heating, ventilation and air-conditioning systems. The paper presents the analysis of one-year measurements of temperature and relative humidity in three different museums in Poland. The aim of the research was to identify the risk to museum collections, due to unbalanced moisture loads and unstable indoor air temperatures, as well as to identify possible causes of fluctuations in these parameters. This article focuses on assessing the impact of variable external and internal loads on the hygrothermal parameters of indoor air. The profile of internal hygrothermal loads in exhibition halls varied over time, which resulted in a temporary variation of the indoor environmental parameters. The lack of appropriate systems, shaping the microclimate in the analyzed museums, and the lack of automatic control in existing devices did not allow to maintain the temperature and relative humidity within appropriate limits. In the museums, the maximum indoor temperature values were higher than those recommended in the requirements. Relative humidity values in all museums exceeded the recommended range both above and below.

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