Results 101 to 110 of about 113,405 (290)

The validity of PPP: evidence from Lagrange multiplier unit root tests for ASEAN countries [PDF]

The univariate and panel Lagrange Multiplier (LM) unit root tests with one and two structural breaks proposed by Lee and Strazicich (2003, 2004) which are considerably more powerful than traditional tests are employed to investigate whether the ...
Alper ASLAN
core  

Multiscale Regulation of Ru‐Based Catalysts for Upgrading Biomass‐Derived Levulinic Acid and Levulinates to γ‐Valerolactone: Mechanisms, Advances, and Challenges

Advanced Science, EarlyView.
This review summarizes recent advances in the mechanistic, thermodynamic, and kinetic studies of biomass‐derived levulinic acid/levulinates conversion to γ‐valerolactone, along with the corresponding multiscale regulation strategies of Ru‐based catalysts.
Xin Ni, Cailu Xiao, Gongbing Zhou, Jingzi Zhang   +3 more
wiley   +1 more source

Noninvasive tests for nonalcoholic fatty liver disease in a multi‐ethnic population: The HELIUS study

Hepatology Communications, EarlyView., 2022
Abstract Nonalcoholic fatty liver disease (NAFLD) is increasing in prevalence and severity globally, prompting noninvasive testing, yet limited data exist on noninvasive liver tests (NITs) including transient elastography (TE) in ethnically diverse populations.
Anne‐Marieke van Dijk, Yasaman Vali, Anne Linde Mak, Henrike Galenkamp, Max Nieuwdorp, Bert‐Jan van den Born, Adriaan Georgius Holleboom   +6 more
wiley   +1 more source

How Puzzling is the PPP Puzzle? An Alternative Half-Life Measure of Convergence to PPP [PDF]

The lengthy half-lives of real exchange rates in the presence of high degree of exchange rate volatility has been considered as one of the most puzzling empirical regularities in international macroeconomics.
George Kapetanios, Georgios Chortareas
core  

Topology‐Driven X‐Shaped DNA as a cGAS Stimulator to Promote Dendritic Cell Activation and Antitumor Vaccine Efficacy

Advanced Science, EarlyView.
X‐shaped DNA promotes multivalent cGAS assembly and enhances cGAS‐STING signaling. When conjugated with antigenic peptides, the resulting X‐DNA‐based peptide vaccine promotes dendritic cell activation, antigen presentation, and antitumor T‐cell responses.
Jiabei Li, Xuan Wang, Dali Wei, Zhejie Chen, Ziyi Wang, Qing Yu, Yu Yang, Shengpeng Wang   +7 more
wiley   +1 more source

Pasado y presente del sindicalismo colombiano

Revista Controversia
Controversia quiere presentar a sus lectores una visión panorámica de la realidad del sindicalismo colombiano arrancando de su historia anterior para describir a grandes rasgos su conducta en el momento actual.
Fernán. E. González
doaj  

Digging Out the PPP Hypothesis: an Integrated Empirical Coverage [PDF]

We use several popular tests to test the validity of the Purchasing Power Parity (PPP) hypothesis. In particular, we analyze four classes of tests { standard univariate unit root tests, co-integration, panel unit root tests and unit root tests for ...
Paulo Julio, Miguel de Carvalho
core  

Al1−xHfxN$\text{Al$_{1-x}$Hf$_{x}$N}$ Thin Films with Enhanced Piezoelectric Responses for GHz Surface Acoustic Wave Devices

Advanced Electronic Materials, EarlyView.
Reactively sputtered wurtzite Al1‐xHfxN thin films, exhibiting strong c‐axis texture and enhanced piezoelectric response, are demonstrated as a cost‐effective alternative to Al1‐xScxN. X‐ray absorption spectroscopy reveals that cross‐gap N 2p–Hf 5d hybridization increases the Born effective charge and enables a multifold increase in piezoelectric ...
Laura I. Wagner, Verena Streibel, Esperanza Luna, Katarina S. Flashar, Valentin Walbrunn, Walid Anders, Nicole Volkmer, Doreen Steffen, Katrin Morgenroth, Frans Munnik, Tsedenia A. Zewdie, Saswati Santra, Jutta Schwarzkopf, Ian D. Sharp, Mingyun Yuan   +14 more
wiley   +1 more source

Temporary Programs, Lasting Questions: Ad Hoc Assistance in the U.S. Farm Safety Net

Applied Economic Perspectives and Policy, EarlyView.
ABSTRACT Large ad hoc assistance programs have returned to U.S. farm policy since 2017, operating alongside a more developed safety net built around federally subsidized crop insurance, Title I commodity programs, and standing disaster assistance. This paper reviews the renewed use of ad hoc assistance, documents its recent scale using USDA data, and ...
Alejandro Plastina, Oranuch Wongpiyabovorn   +1 more
wiley   +1 more source

Food Security Strategy, Macroeconomic Dynamics and Food Import Sensitivity in Qatar

Agribusiness, EarlyView.
ABSTRACT Qatar has limited agricultural land and water resources and therefore remains highly dependent on food imports. This structural dependency makes Qatar vulnerable to external shocks such as the recent Gulf crisis, threatening food security and disrupting global supply chains. In response to previous shocks, Qatar started implementing a National
Hansini Ranjan, Simeon Kaitibie, Alanoud Ali S. Al‐Maadid, John N. Ng'ombe, Ishrat Hossain, Mostafizur Rahman   +5 more
wiley   +1 more source