TA-APTES-SP coating is used to optimize the wettability and stability of PVDF nanofiber membranes for oil–water separation.

A highly efficient Pd/Ca catalytic system for the directly dehydrative cross-coupling of allylic alcohols with terminal alkynes was developed. This calcium salt cocatalyst facilitates oxidative addition palladium catalyst (1 mol %) to C–OH bond. Then, in situ-generated hydroxide ion deprotonates promote formation allylalkynylpalladium intermediate, liberating water as only byproduct. proposed mechanism is also supported by density functional theory calculations. An anticancer agent prepared...

A reciprocal-activation strategy for allylic sulfination with unactivated alcohols was developed. In this reaction, the hydrogen bond interaction between and sulfinic acids allowed reciprocal activation, which enabled a dehydrative cross-coupling process to occur under mild reaction conditions. This worked in an environmentally friendly manner, yielding water as only byproduct. variety of sulfones could be obtained good excellent yields wide functional group tolerance. gram scale reactions,...

A novel strategy for the preparation of allylic phosphorus ylides directly from Morita–Baylis–Hillman (MBH) alcohols in an environmentally benign manner was developed. With assistance a calcium catalyst, SN2′ process between phosphines and occurred smoothly, delivering salts calcium-stabilized hydroxide ions. Then, situ deprotonation gave with water as only byproduct. Functionalized 1,3-diene moieties can be conveniently obtained by trapping through Wittig olefination.

An alkaline-earth metal catalytic system for environmentally benign allylic alkylation was developed. Allylic alcohols can be utilized directly at room temperature in this transition-metal-free process, producing water as the only byproduct. A variety of compounds, including ones containing all-carbonyl quaternary centers, obtained with high yields.

An effective Supervisory Control and Data Acquisition (SCADA) system can improve the reliability, safety economic benefits of a microgrid operation. In this research, lower central controller upper WEB (World Wide Web) monitoring are connected by SCADA system, which is hub intelligent platform. This contains set specific functions programmed Java as middleware provide communication control between system. For sake security stability microgrid, realizes business processing on real-time data...

A calcium-catalyzed <italic>in situ</italic> dehydrative cross-coupling reaction of propargylic alcohols with 1,3-dicarbonyl compounds was developed at room temperature under solvent-free conditions.

The dynamical behavior of a friction‐induced oscillator with 2‐DOF on speed‐varying belt is investigated by using the flow switchability theory discontinuous systems. mechanical model consists two masses and traveling belt. Both are connected three linear springs dampers harmonically excited. Different domains boundaries for such system defined according to friction discontinuity. Based above boundaries, analytical conditions passable motions, stick grazing motions obtained mathematically....

Some substituted quinolines were effectively synthesized utilizing chlorotrimethylsilane (TMSCl) as efficient promoter in the cyclization addition of enolizable aldehydes to arylimines under an air atmosphere DMSO.The clean, mild and ecofriendly process with high yields a simple workup desired compounds are attractive features reaction which enables facile preparation quinoline ring.

The k-nearest neighbor (k-NN) nonparametric regression is a classic model for single point short-term traffic flow forecasting. flows of the same clock time days are viewed as neighbors to each other, and with most similar values regarded nearest used prediction. In this method, only information considered. However, it observed that "trends" in useful Taking sequence consecutive periods viewing "increasing", "equal" or "decreasing" two pattern, patterns can be prediction, despite not from...

A practical palladium/calcium catalytic system was developed for dehydrative allylation with unactivated allylic alcohols.

A Ba/Pd cooperative catalysis system was developed to enable the dehydrative cross-coupling of allylic alcohols with P-ylides occur directly and promote a subsequent Wittig reaction in one pot. variety multisubstituted 1,4-dienes were isolated good excellent yields broad (stabilized by both ester ketone carbonyl groups) aldehyde (aliphatic aromatic) substrates E selectivity.

The air-reversed Brayton cycle produces charming, environmentally friendly effects by using air as its refrigerant and has potential energy efficiency in applications related to space heating building heating. However, there exist several types of that need be discussed. In this paper, six heat pump with a turbocharger, applicable under different conditions, are developed. expressions the coefficient performance (COP) corresponding turbine pressure ratio derived based on thermodynamic...

The effective Supervisory Control and Data Acquisition (SCADA) system can improve the reliability, safety economic benefits of microgrid operation. In this research, lower central controller upper WEB monitoring are connected by SCADA which is as hub intelligent platform. This contains a set specific functions programmed Java middleware provide control communication between system. realizes real-time data acquisition storage, instructions parsing transmitting, security stability, load...

High vibration poses significant safety and operational risks to compressor components. This study presents a thorough investigation of the root causes analysis corrective actions resolve vibration-induced failures faced on suction system reciprocating compressor. Excessive pressure pulsations in bottle strong mechanical coupling between cylinders due high cylinder gas forces were identified as failure system. The proposed solutions eliminate this problem implemented by splitting into two...

A gas compressor station only had its about 35% design processing capacity as a result of the abnormal piping vibrations on inlet pipelines. Characterization, diagnostics, analysis, and elimination vibration were performed. The root causes sources investigated by on‐site measurements analysis pulsation under various load conditions compressors. results revealed that it was not mechanical resonance, but high pressure acoustic resonance occurred pipelines, which resulted in severe vibration....