cause and that this, in mammals as in birds, is a virus.― Mann (33—35)injected frozen spontaneous and transplanted mammary cancers and explained the development of tumors on the basis that the mam mary tumor milk agent-virus was liberated in its active form following freezing, since mammary tu mors arose at the site of injection of the suspended frozen tumor-mince. The tumors developed as r...

Abstract Understanding trends and variability of precipitation is essential to improve water resources utilization as well agricultural activities. This study aims investigate the spatiotemporal rainfall in Modjo watershed, central Ethiopia. The Mann-Kendall trend (M–K) test, innovative analysis (ITA) Sen's slope estimator were used determine temporal trends, while inverse distance weighted int...

This study investigates the trend in monthly and annual rainfall, minimum maximum temperature (Tmin Tmax) using Mann–Kendall (MK) test Sen’s slope (SS) method evaluates significance of their variability for maize, sorghum millet yields northern Togo employing multiple regression analysis. The historical data Kara, Niamtougou, Mango Dapaong weather stations from 1977 to 2012 were used. Four non-...

The non-parametric Mann-Kendall method and Sliding t-test were applied in this study to analyze the spatial and temporal patterns of trends of the precipitation in the Loess Plateau from 1958 to 2007. The main trends of the precipitation in this region is downward, only four upward time series have not reach the significant level. Most of the abrupt changes happened in northeast of Loess Platea...

We propose one parametric and one non-parametric method for detection of monotone trends in nutrient concentrations in brackish waters. Both methods take into account that temporal variation in the quality of such waters can be strongly influenced by mixing of salt and fresh water, thus salinity is used as a classification variable in the trend analysis. With the non-parametric approach, Mann-K...

Drought is one of the natural phenomena which occurs in all climates in different parts of the world. Iran is located in the dry belt of the world. The increase of desertification, drought reoccurrence, and destruction by human in this geographical region needs more studies on spatial and temporal trend of rainfall. In this study, trends of climatic drought during 1975-76/ 2004-05 in seasonal a...

Extreme temperature of several stations in Malaysia is modelled by fitting the monthly maximum to the Generalized Extreme Value (GEV) distribution. The Mann-Kendall (MK) test suggests a non-stationary model. Two models are considered for stations with trend and the Likelihood Ratio test is used to determine the best-fitting model. Results show that half of the stations favour a model which is l...

O objetivo desse trabalho foi analisar a possibilidade de tendências climáticas utilizando dados precipitação pluviométricos na bacia hidrográfica Capibaribe, do estado Pernambuco. Foi utilizada uma série histórica quarenta e cinco anos (552 meses) entre os 1973 2018, obtida no site da Agência Pernambucana Águas Climas - APAC. A análise baseada em apenas um posto pluviométrico. Os que apresenta...