This groundbreaking study looked at the issue of pollution environment in E7 countries from 2002 and 2022. We implemented ARDL to investigate how GDP, institutional quality, trade openness, technological innovation affect CO2 emissions, CH4 N2O which are regarded as indicators environmental pollution. The findings show that variables have a lasting, substantial association all factors e.g techn...

Abstract The purpose of this study is to investigate whether there a fit the environmental Kuznets curve for Southern African development community (SADC) countries. To end, we estimate quadratic regression between greenhouse gas emissions (CO 2 , N 0, CH 4 ), per capita income and other controls, using pooled mean group (PMG) quantile autoregressive distributive lag (QARDL) models applied annu...

Introduction: The Xujiahe Formation in the Yingshan-Longgang area of Sichuan Basin has abundant tight oil and gas resources. However, complex geological conditions insufficient understanding magnitude direction in-situ stresses severely limit exploration development resources region. This made it difficult to carry out hydraulic fracturing horizontal well deployment Methods: Based on experiment...

Recent studies show that regression-based tests of the asymmetric timeliness of earnings may be invalid. We develop an econometric model showing that these tests correctly identify whether or not earnings are conservative; however, the inclusion of future rents in equity values causes the regression coefficients to mismeasure the degree of conservatism. This mismeasurement biases cross-sectiona...

Objectives: Human T-cell lymphotropic virus type 1–associated myelopathy (HAM) involves not only spinal cord but also the cerebral cortex and the white matter in histopathological analysis. In addition, a previous study found that T2 hyperintensities on brain magnetic resonance imaging (MRI) in HAM patients were increased only in white matter. However, conventional neurophysiological examinatio...

We describe herein the case of a 37-year-old woman who presented with slowly progressive lower-limb stiffness and gait ataxia. She complained of running difficulties since the age of 10 years, gait impairment since the age of 30 years, and uri-nary urgency during the past 2 years. Her family history was unremarkable. At the last examination she exhibited spastic gait, pyramidal signs, severe im...

The effects of interionic hydrogen bonding and π-π stacking interactions on the physical properties of a new series of picrate anion based ionic liquids (ILs) have been investigated experimentally and theoretically. The existence of aromatic (C2-HO) and aliphatic (C7-HO-N22 and C6-HO-N20) hydrogen bonding and π-π stacking interactions in these ILs has been observed using various spectroscopic t...