Sökning: "Dong Wang"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden Dong Wang.

1. 1. New Reactions with Allyl- and Allenylboron Reagents : Transition-Metal-Catalyzed and Transition-Metal-Free Carbon-Carbon Bond Formation Processes

   Författare :Dong Wang; Kálmán J. Szabó; Jianbo Wang; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; carbon-carbon bond formation; cross-coupling; organoboron compound; allylboron reagent; allylation; transition metal; metal carbene; allenylboron reagent; transition metal free; diazo compound; tosylhydrazone; quinone; organisk kemi; Organic Chemistry;

   Sammanfattning : Organoboron compounds have been widely used in carbon-carbon bond formation reactions in organic synthesis and catalysis. This thesis is focused on cross-coupling reactions of allyl-, allenylboronic acids and their ester derivatives via transition metal catalysis or transition-metal-free processes. LÄS MER

3. 2. How can data science contribute to a greener world? : an exploration featuring machine learning and data mining for environmental facilities and energy end users

   Författare :Dong Wang; Mats Tysklind; Johan Trygg; Lili Jiang; Venkat Venkatasubramanian; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wastewater treatment; Process analytics; Big data; Machine learning; Interpretable AI; Power plants; Failure analysis; Data mining; Buildings; Energy consumption; Anomaly detection;

   Sammanfattning : Human society has taken many measures to address environmental issues. For example, deploying wastewater treatment plants (WWTPs) to alleviate water pollution and the shortage of usable water; using waste-to-energy (WtE) plants to recover energy from the waste and reduce its environmental impact. LÄS MER

4. 3. Quantum Wavepacket Dynamics in Molecular and Trapped Ion Systems

   Författare :Dong Wang; Tony Hansson; Volker Engel; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; wavepacket; revival; anisotropy; polarization; Molecular physics; Molekylfysik; kemisk fysik; Chemical Physics;

   Sammanfattning : The motions of a wavepacket in the two coupled potentials studied in this thesis can be classified into either bistable or astable motion according to the wavepacket interference at the curve crossing. Bistable motion, in which the wavepacket performs a coupled oscillation but remains in the same adiabatic and diabatic state, can exist both in bound-bound systems and bound-unbound ones with long time stability. LÄS MER

5. 4. Endothelin and nitric oxide in coronary vascular regulation with special reference to myocardial ischemia/reperfusion injury

   Författare :Qing-Dong Wang; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :endothelium; endothelin; myocardial ischemia; myocardial infarction; reperfusion; L-arginine; nitric oxide.;

   Sammanfattning : The vascular endothelium plays an important role in the regulation of cardiovascular function by producing bioactive substances such as nitric oxide (NO) and endothelin-I (ET- 1). Recent evidence has revealed that endothelial dysfunction is closely related to myocardial ischemia/reperfusion injury. LÄS MER

7. 5. Lifetime modeling and management of transformers

   Författare :Johanna Rosenlind; Rajeev Thottappillill; Zhong Dong Wang; KTH; []
   Nyckelord :transformers; lifetime modeling; asset management; thermal modeling; lifetime estimation;

   Sammanfattning : This work have studied and developed lifetime estimation methods for the power transformer and how these could be used for asset management purposes. It is researchperformed in the intersection of the fields of reliability theory, statistical analysis, and stochastic process theory applied to lifetime estimations and management of transformers. LÄS MER