The incident occurred at Shakti Paper Mill in Tetla village, where the victims were cleaning an open tank on Wednesday evening, said Raigarh superintendent of police Santosh Singh.

Vizag gas leak: LG Polymers issues official statement, says doing our...

Medical camps will be conducted in the five villages around the plant, says Muttamsetti

‘Long-term impact on patients’ health needs to be assessed’

BJP State president Kanna Lakshminarayana wrote a letter to Chief Minister Y.S. Jagan Mohan Reddy demanding an inquiry into the gas leak incident at L

Visakhapatnam gas leak: LG Polymers apologises, offers ‘every support’ to affected

Vizag gas leak: Chilling scenes bring back memories of Bhopal gas tragedy

Gas leak fallout: CPCB asks industrial units across India to go for safety and hazard audit before resuming operations

Decision day looms over Ellesmere Port shale gas plan  Cheshire Live

Scottish researchers win £12m CCUS funding from European pot - News for the Oil and Gas Sector  Energy Voice

Fracking: UK shale gas reserves 'significantly lower than previous estimates'  Energy Live News - Energy Made Easy

The photovoltaic perovskite, methyl­ammonium lead triiodide [CH3NH3PbI3 (MAPbI3)], is one of the most efficient materials for solar energy conversion. Various kinds of chemical and physical modifications have been applied to MAPbI3 towards better understanding of the relation between composition, structure, electronic properties and energy conversion efficiency of this material. Pressure is a particularly useful tool, as it can substantially reduce the interatomic spacing in this relatively soft material and cause significant modifications to the electronic structure. Application of high pressure induces changes in the crystal symmetry up to a threshold level above which it leads to amorphization. Here, a detailed structural study of MAPbI3 at high hydro­static pressures using Ne and Ar as pressure transmitting media is reported. Single-crystal X-ray diffraction experiments with synchrotron radiation at room temperature in the 0–20 GPa pressure range show that atoms of both gaseous media, Ne and Ar, are gradually incorporated into MAPbI3, thus leading to marked structural changes of the material. Specifically, Ne stabilizes the high-pressure phase of NexMAPbI3 and prevents amorphization up to 20 GPa. After releasing the pressure, the crystal has the composition of Ne0.97MAPbI3, which remains stable under ambient conditions. In contrast, above 2.4 GPa, Ar accelerates an irreversible amorphization. The distinct impacts of Ne and Ar are attributed to differences in their chemical reactivity under pressure inside the restricted space between the PbI6 octahedra.

A gas- and vapour-pressure control system synchronized with the continuous data acquisition of millisecond high-resolution powder diffraction measurements was developed to study structural change processes in gas storage and reaction materials such as metal organic framework compounds, zeolite and layered double hydroxide. The apparatus, which can be set up on beamline BL02B2 at SPring-8, mainly comprises a pressure control system of gases and vapour, a gas cell for a capillary sample, and six one-dimensional solid-state (MYTHEN) detectors. The pressure control system can be remotely controlled via developed software connected to a diffraction measurement system and can be operated in the closed gas and vapour line system. By using the temperature-control system on the sample, high-resolution powder diffraction data can be obtained under gas and vapour pressures ranging from 1 Pa to 130 kPa in temperatures ranging from 30 to 1473 K. This system enables one to perform automatic and high-throughput in situ X-ray powder diffraction experiments even at extremely low pressures. Furthermore, this developed system is useful for studying crystal structures during the adsorption/desorption processes, as acquired by millisecond and continuous powder diffraction measurements. The acquisition of diffraction data can be synchronized with the control of the pressure with a high frame rate of up to 100 Hz. In situ and time-resolved powder diffraction measurements are demonstrated for nanoporous Cu coordination polymer in various gas and vapour atmospheres.

The room-temperature experiment has been revisited for macromolecular crystallography. Despite being limited by radiation damage, such experiments reveal structural differences depending on temperature, and it is expected that they will be able to probe structures that are physiologically alive. For such experiments, the humid-air and glue-coating (HAG) method for humidity-controlled experiments is proposed. The HAG method improves the stability of most crystals in capillary-free experiments and is applicable at both cryogenic and ambient temperatures. To expand the thermal versatility of the HAG method, a new humidifier and a protein-crystal-handling workbench have been developed. The devices provide temperatures down to 4°C and successfully maintain growth at that temperature of bovine cytochrome c oxidase crystals, which are highly sensitive to temperature variation. Hence, the humidifier and protein-crystal-handling workbench have proved useful for temperature-sensitive samples and will help reveal temperature-dependent variations in protein structures.

Cryocooling for macromolecular crystallography is usually performed via plunging the crystal into a liquid cryogen or placing the crystal in a cold gas stream. These two approaches are compared here for the case of nitro­gen cooling. The results show that gas stream cooling, which typically cools the crystal more slowly, yields lower mosaicity and, in some cases, a stronger anomalous signal relative to rapid plunge cooling. During plunging, moving the crystal slowly through the cold gas layer above the liquid surface can produce mosaicity similar to gas stream cooling. Annealing plunge cooled crystals by warming and recooling in the gas stream allows the mosaicity and anomalous signal to recover. For tetragonal thermolysin, the observed effects are less pronounced when the cryosolvent has smaller thermal contraction, under which conditions the protein structures from plunge cooled and gas stream cooled crystals are very similar. Finally, this work also demonstrates that the resolution dependence of the reflecting range is correlated with the cooling method, suggesting it may be a useful tool for discerning whether crystals are cooled too rapidly. The results support previous studies suggesting that slower cooling methods are less deleterious to crystal order, as long as ice formation is prevented and dehydration is limited.

A new temperature-controllable humidifier for X-ray diffraction has been developed. It is shown that the humidifier can successfully maintain protein crystal growth at a temperature lower than room temperature.

This work describes a method to characterize the size distribution of individual aqueous droplets in a high-density and polydisperse aerosol. It is shown that droplets smaller than 120 nm can be generated by purely mechanical means using a gas dynamic virtual nozzle, and theoretical models are provided for the different flow regimes investigated.

Darwin's bark spider cast giant webs across streams, rivers and lakes, suspending the web’s orb above water and attaching it to plants on each riverbank. Bridgelines of these water-spanning webs have been measured as long as 25 meters.

The post Newly discovered Madagascar spider spins largest, toughest webs on record appeared first on Smithsonian Insider.

The extrasolar planet GJ 1214b has a radius of about 2.7 times that of the Earth and is about 6.5 times as massive putting it squarely into the class of exoplanets known as super-Earths.

The post Super-earth has an atmosphere, but is it steamy or gassy? appeared first on Smithsonian Insider.

This Jupiter-sized world reflects less than one percent of the light that falls on it, making it blacker than any planet or moon in our solar system.

The post Darkest known exoplanet, a Jupiter-sized gas giant, discovered appeared first on Smithsonian Insider.

Anoplogaster cornuta, commonly known as the fangtooth fish, have shortened, deep bodies with a characteristically large mouth lined with sharp, fang-like teeth. This deep-sea fish […]

The post Anoplogaster cornuta or fangtooth appeared first on Smithsonian Insider.

A newly described species of toothed whale that lived some 3-4 million years ago during the Pliocene, is causing scientists to reconsider what is known about its living cold-water relatives: narwhals and belugas.

The post New fossil whale species raises mystery regarding why narwhals and belugas live only in cold water appeared first on Smithsonian Insider.

stronomers have used NASA's Chandra X-ray Observatory to find evidence our Milky Way Galaxy is embedded in an enormous halo of hot gas that extends for hundreds of thousands of light years.

The post Chandra X-ray Observatory shows Milky Way is surrounded by halo of hot gas appeared first on Smithsonian Insider.

An international team of astronomers has discovered the first Earth-mass planet that transits, or crosses in front of, its host star. KOI-314c is the lightest […]

The post Newfound planet is Earth-mass but gassy appeared first on Smithsonian Insider.

In the United States, natural-gas production from shale rock has increased by more than 700 percent since 2007. Yet scientists still do not fully understand […]

The post Biological fallout of shale-gas production still largely unknown appeared first on Smithsonian Insider.

In 1854, a curious-looking spider was found preserved in 50 million-year-old amber. With an elongated neck-like structure and long mouthparts that protruded from the “head” […]

The post These newly discovered pelican spiders will make you want to visit Madagascar appeared first on Smithsonian Insider.

Ganlu Deng, Yihong Chen, Cao Guo, Ling Yin, Ying Han, Yiyi Li, Yaojie Fu, Changjing Cai, Hong Shen, and Shan Zeng

Epithelial-mesenchymal transition (EMT) is a crucial process for cancer cells to acquire metastatic potential, which primarily causes death in gastric cancer (GC) patients. Bone morphogenetic protein 4 (BMP4) is a member of the TGF-β family that plays an indispensable role in human cancers. However, little is known about its roles in GC metastasis. In this study, BMP4 was found to be frequently overexpressed in GC tissues and was correlated with patient's poor prognosis. BMP4 was upregulated in GC cell lines and promoted EMT and metastasis of GC cells both in vitro and in vivo, while knockdown of BMP4 significantly inhibited EMT and metastasis of GC cells. Meanwhile, the inhibitor of DNA binding 1 (Id1) was identified as a downstream target of BMP4 by PCR arrays and upregulated via Smad1/5/8 phosphorylation. Id1 knockdown attenuated BMP4-induced EMT and invasion in GC cells. Moreover, Id1 overexpression in BMP4 knockdown cells restored the promotion of EMT and cell invasion. In summary, BMP4 induced EMT to promote GC metastasis by upregulating Id1 expression. Antagonizing BMP4 may be a potential therapeutic strategy in GC metastasis.

“When you can’t breathe, nothing else matters,” once a tagline of the American Lung Association, today it might easily describe what is happening in many […]

The post Gasping for air: nutrients, warming trigger ocean oxygen deficit appeared first on Smithsonian Insider.

Yaya Wang
Apr 7, 2020; 133:jcs228072-jcs228072
REVIEW

Source: Streetwise Reports   05/07/2020

In a May 5 research note, analyst John Freeman reported that Raymond James increased its target price on Parsley Energy, Inc. (PE:NYSE) after it posted its Q1/20 numbers.

Raymond James' new target price on Parsley is $12 per share, up from $11. The Texas-based energy company's stock is trading now at about $9.38 per share.

Freeman reviewed and commented on Parsley's Q1/20 results. The company "delivered modest EBITDA and earnings per share beats relative to the Street" due to oil pricing," Freeman pointed out.

Production was relatively in line at 126,600,000 barrels of oil per day (126.6 MMbbl/d), which was 1% higher than consensus' forecast but 1% below Raymond James' estimate. Total production was 1% above the Street's projection but 3% below Raymond James' forecast.

"The performance on the quarter was encouraging, however, the highlight from earnings was the significant reduction in 2020 capex (down from about $1 billion to less than $700 million)," Freeman commented.

Capex, "a welcome surprise," Freeman wrote, came in 5% and 7% lower than the investment bank and the Street's estimates, respectively. Opex was 3% under Raymond James' projection

Moreover, Parsley's related maintenance capital needs were greatly below expectations as well, indicating that Parsley made capital efficiency gains during the period.

"We were pleasantly surprised that Parsley is able to maintain in line Q4/20 oil volumes (about 115 MMbbl/d) on a capital program that's about $300 million/30% below the Street," added Freeman.

Looking forward, Raymond James modeled a base case, or stable scenario for Parsley, that implies a West Texas Intermediate oil price of about $30 a barrel and Parsley having four to five rigs and one to two crews operating. In that scenario, Parsley would produce about 117 MMbbl/d in 2020 and 115 MMbbl/d in 2021.

Capex would amount to about $678 million in 2020, dropping to $598 million in 2021.

Free cash flow would be about $300 million in 2020, which coincides with Parsley's guidance of $300M plus, and increasing to $370 million in 2021.

Raymond James has an Outperform rating on Parsley Energy.

Disclosure:
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Disclosures from Raymond James, Parsley Energy Inc, May 5, 2020

ANALYST INFORMATION

Analysts Holdings and Compensation: Equity analysts and their staffs at Raymond James are compensated based on a salary and bonus system. Several factors enter into the bonus determination, including quality and performance of research product, the analyst's success in rating stocks versus an industry index, and support effectiveness to trading and the retail and institutional sales forces. Other factors may include but are not limited to: overall ratings from internal (other than investment banking) or external parties and the general productivity and revenue generated in covered stocks.

The analyst John Freeman, primarily responsible for the preparation of this research report, attests to the following: (1) that the views and opinions rendered in this research report reflect his or her personal views about the subject companies or issuers and (2) that no part of the research analyst's compensation was, is, or will be directly or indirectly related to the specific recommendations or views in this research report. In addition, said analyst(s) has not received compensation from any subject company in the last 12 months.

RAYMOND JAMES RELATIONSHIP DISCLOSURES
Certain affiliates of the RJ Group expect to receive or intend to seek compensation for investment banking services from all companies under research coverage within the next three months.

Raymond James & Associates, Inc. makes a market in the shares of Parsley Energy, Inc.

Additional Risk and Disclosure information, as well as more information on the Raymond James rating system and suitability categories, is available here.