Tuesday, January 15, 2019

Southern Beaufort polar bear attack far from the Alaskan coast: another winter example

A man from Arctic Village (Alaska), out checking his trap-line, killed a polar bear at his cabin when it came after him: only odd things were it was the first week of January and the cabin was more than 100 miles south of the Beaufort Sea coast.

polar_bear_in fall terry debruyne_usfws nov 10 2010_w label_sm

Winter is hard for polar bears, as I've mentioned before: it's cold, dark, and hard to find seals. Most bears are at their lightest weight at the end of winter (March). Looking for food in the dead of winter, the bears can be very destructive as well as dangerous. See previous posts here, here, here, and here.

The map below shows how far south Arctic Village is from the Beaufort coast. This hunter is lucky he had his wits about him and his gun handy, because he came awfully close to being a polar bear's dinner.

arctic village ak map google

Here's an excerpt of the story (my bold): "Polar bear encounter reported in Arctic Village, many miles south of normal range" (KTOO, Ravenna Koenig, 15 January 2019):

A man in Arctic Village reports that in early January he encountered and shot a polar bear. That may be an unprecedented event in Arctic Village, which is over a hundred miles south of the Beaufort Sea coastline, far outside polar bears' normal range.

Jim Hollandsworth has lived in Arctic Village for about 30 years. He said he has never seen a polar bear before now. Neither have any of the elders he's spoken to.

"One of the elders had heard about polar bears before, maybe, but no one's ever actually seen one," Hollandsworth said.

He reported that he went to check a trapline about a week and a half ago [sjc – about Jan 4-5] and immediately saw evidence of the bear when he arrived at his camp, which is about 20 miles from town by trail.

"Tore up one of the snowmachines, flipped it completely over," said Hollandsworth, describing the damage. "Destroyed everything all around it, um, kinda marking its spot."

arctic village attack_damage_j hollandsworth 2019-01-15

Hollandsworth didn't see the bear itself until the next morning, when he stepped outside to put gas in the generator.

"My dog barked, and the bear was on my back, right behind me. And I jumped back inside, grabbed my rifle," said Hollandsworth. "By time I got turned around, it was heading for the door, the open door. Wanted to come in. So they got shot point-blank right there at the doorstep," he said.

Hollandsworth said it was still pretty dark out, and it was only after he'd shot the bear that he realized what it was. He said that the bear appeared to be a young female, probably about two years old.

"It's not common for polar bears to be way outside of the typical range, but it's not unheard of," said Eric Regehr, a polar bear researcher with the University of Washington who's worked in Alaska.

He said that bears in Alaska usually stay within a few miles of the coast, with the exception of pregnant females who may go farther inland to build their dens. But even those bears generally don't venture as far south as the Brooks Range.

The Alaska Department of Fish and Game provided two examples of polar bears appearing unusually far south in the past two decades: one in Fort Yukon in 2008, and the other on the haul road almost to Toolik Lake back in 2002. [sjc – see maps below]

Regehr said that in individual cases like this, it's very difficult to attribute cause to why a bear wandered so far from its typical area.

"It seems to particularly happen with young bears," he said. "And it's not clear if they're dispersing, looking for new habitat. It's not clear if they got, you know, mixed up, if they're just inexperienced and they went the wrong way."

He said that generally, declining sea ice due to climate change may lead some bears to appear in unusual places, but at this time of year — when sea ice is present — it doesn't seem to him to be a likely explanation.

Read the whole thing here. There's also audio, from a radio interview.

At least this incident is not being blamed on lack of sea ice. But two other reasons a young bear may wander far in winter are competition and the threat of cannibalism. Older, bigger bears probably dominate the few good hunting spots on the winter ice, to the exclusion of younger bears – as they do in other seasons. I expect a few big males might even turn on youngsters as a food source, which means young bears would be smart to stay far away from the dominant boars.

Toolik Lake, location of 2002 polar bear sighting:

toolik lake ak polar bear sighting 2002

Fort Yukon, location of 2008 sighting:

fort yukon ak polar bear sighting 2008



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Europe Continues Snowgeddon

Looks like Europe has had (and is still having?) major snow. Continue reading

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UN warns of rising levels of toxic brine as desalination plants meet growing water needs

189712_web-720x438.jpg

From EurekAlert! Public Release: 14-Jan-2019 UN warns of rising levels of toxic brine as desalination plants meet growing water needs World's ~16,000 desalination plants discharge 142 million cubic meters of brine daily — 50 percent more than previously estimated; Enough in a year to cover Florida under a foot (30.5 cm) of brine United Nations…

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A Simple Matrine Derivative for the Facile Syntheses of Mesoporous Zeolites ITQ-37 and ITQ-43

Chem. Commun., 2019, Accepted Manuscript
DOI: 10.1039/C8CC08196D, Communication
Chuanqi Zhang, Li Xu, Xinzhu Li, Jibo Hu, Liangkui Zhu, Yan Li, Jiuxing Jiang, Zhendong Wang, Weimin Yang
ITQ-37 and ITQ-43 possessing mesoporous structures have aroused great interests because of their promising application involving large molecules. However, it is challenging to synthesize these zeolites. Herein, ITQ-37 and ITQ-43...
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Recent development on the [5+2] cycloadditions and their application in natural product synthesis

Chem. Commun., 2019, Accepted Manuscript
DOI: 10.1039/C8CC09077G, Feature Article
Kai Gao, Yong-Gang Zhang, Zhiming Wang, Hanfeng Ding
The [5+2] cycloaddition is one kind of fascinating and powerful reaction to access seven-membered ring systems existing in complex natural products and pharmaceuticals. In this review, recent developments on the...
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The Debate Continues: More discount rates and candy-canes

Guest post by Mark Freeman On 11th January, Lord Monckton of Brenchley kindly replied ("Of discount rates and candy-canes") to a guest post of mine on WUWT concerning Nordhaus' choice of discount rates ("Is Nordhaus' discount rate really too low?", 4th January). This is a response to a number of issues around the choice of…

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Levels, distributions, and ecological risk assessments of polybrominated diphenyl ethers and alternative flame retardants in river sediments from Vaal River, South Africa

Abstract

Sediments are known to be the ultimate sink for most pollutants in the aquatic environment. In this study, the concentrations of both legacy polybrominated diphenyl ethers (PBDEs) and alternative halogenated flame retardants (AHFRs) were measured in sediments samples from the Vaal River catchment. The concentrations of Σ7BDE-congeners ranged from 20 to 78 ng g−1 dry weight (dw) with BDE-209, -99, and -153 as the dominant congeners. The concentrations observed ranged from 9.4–56, 4–32, and 1–10.6 ng g−1 for BDE-209, -99, and -153, respectively. The concentrations of AHFRs, mainly contributed by decabromodiphenyl ethane (DBDPE) at approximately 95% of total AHFRs, ranged from 64 to 359 ng g−1 dw while the concentration of polybrominated biphenyls (PBBs), mainly PBB-209, ranged from 3.3–7.1 ng g−1 dw. The ratios of AHFRs to PBDEs observed in this study were 0.76, 1.17, and 7.3 for 2-ethyl-1-hexyl-2,3,4,5-tetrabromobenzoate and bis-(2-ethylhexyl)-tetrabromophthalate (EH-TBB & BEH-TEBP)/penta-BDE; 1,2-bis-(2,4,6-tribromophenoxy) ethane (BTBPE)/octa-BDE; and DBDPE/BDE209, respectively. These results indicate dominance of some AHFRs compared to PBDEs. Our results indicates that BDE-99 poses high risk (RQ > 1) while BDE-209 posed medium risk (0.1 < RQ < 1). Though the concentration of DBDPE was several orders of magnitude higher than BDE209, its ecological risk was found to be negligible (RQ < 0.01). Thus, more attention is required to regulate the input (especially the e-waste recycling sites) of brominated flame retardants into the environment.



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[ASAP] 11-Step Total Synthesis of Teleocidins B-1–B-4

TOC Graphic

Journal of the American Chemical Society
DOI: 10.1021/jacs.8b13697
jacsat?d=yIl2AUoC8zA


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Research on the electrostatic characteristic of coal-fired fly ash

Abstract

China is the biggest consumer of coal. Every year, half or more of China's coal is used in the power industry. Most thermal power plants in China use electrostatic precipitators to treat solid particulate matter in flue gas. The efficiency of the electrostatic precipitator in removing dust has a considerable influence on atmospheric pollutants. However, the most important factor affecting the efficiency of the electrostatic precipitator in removing dust is the dielectric properties of the fly ash. Through the study of volt-ampere characteristics, electrical and capacitive properties, and electrical breakdown characteristics of coal-fired fly ash, it is found that the V–I characteristics of ash samples in thermal power plant do not strictly follow the formula ( \( R=\frac{U}{I} \) ), the type of coal, and the chemistry of coal. Ingredients are related; disparate types of ash samples have disparate capacitances, and the measurement of capacitive contrast resistance has a certain influence.



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Impact of substrate material on algal biofilm biomass growth

Abstract

Algae are being grown for wastewater purification and biofuels production. Their growth on a substrate facilitates these uses by allowing facile separation of algae from the water. Here, we compare different materials to determine which would best serve this purpose. A mixed culture of Anabaena and Chlorella was grown on various synthetic and natural fiber fabric substrates in a trough system with recirculating simulated wastewater. Filter materials studied as substrates for algal growth were muslin, olefin, pellon (acrylic), two types of polyester, and two types of nylon. Biomass accumulation on the various filter substrates was recorded at 7, 14, and 28 days. Filters were weighed before and after the growth periods and changes in dry biomass were recorded. Biomass accumulation was significantly affected by the fabric type. Olefin fostered the greatest increase in biomass while nylon and polyester also supported competitive increases in biomass. Pellon showed the smallest biomass increase and muslin decreased in mass due to material disintegration. Other concerns such as abrasion resistance and UV susceptibility are discussed.



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A new view: Observing Clouds in Four Dimensions

4D-cumulus-clouds-720x459.png

Six cameras are revolutionizing observations of shallow cumulus clouds. The Science While easily seen by people, the cotton-ball clouds (called shallow cumulus clouds) that drift overhead on partly cloudy days are hard for radars and many other instruments to observe and, therefore, hard to model and predict. Scientists situated six digital cameras in pairs at…

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Senate Shouldn’t Put Wheeler at the Wheel of the EPA

wheeler1.png?itok=KOju1gB1



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Isolation, characterization, and therapeutic activity of bergenin from marlberry ( Ardisia colorata Roxb.) leaf on diabetic testicular complications in Wistar albino rats

Abstract

Bergenin is one of the phytochemical constituents in marlberry (Ardisia colorata Roxb.) having antioxidant, anti-diabetic, and anti-inflammatory properties. A. colorata has been used as an herbal medicine in Southeast Asia particularly in Northeast India to treat diabetes. Bergenin was isolated from methanol extract of A. colorata leaf (MEACL) by column chromatography and TLC profiling. Characterization and structural validation of bergenin were performed by spectroscopic analyses. A LC-ESI-MS/MS method was developed for the quantitation of bergenin and validated as per the guidelines of FDA and EMA. The validated method was successfully utilized to quantify bergenin concentration in MEACL samples. Therapeutic efficacy of bergenin was investigated on streptozotocin-induced diabetic rats by following standard protocols. Bergenin supplementation significantly improved the physiological and metabolic processes and in turn reverses diabetic testicular dysfunction via increasing serum testosterone concentrations and expression pattern of PCNA, improving histopathological and histomorphometric manifestations, modulating spermatogenic events and germ cell proliferation, restoring sperm quality, reducing sperm DNA damage, and balancing the antioxidant enzymes levels. Hence, A. colorata leaf is one of the alternate rich resources of bergenin and could be used as a therapeutic agent for diabetic testicular complications.



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An evaluation of the levels of organochlorine compounds (OCPs and PCBs) in cultured freshwater and wild sea fish eggs as an exposure biomarker for environmental contamination

Abstract

In this study, the eggs of 30 wild Black Sea whiting (Merlangius merlangus euxinus, Nordmann, 1840) and 30 farmed freshwater rainbow trout (Oncorhynchus mykiss, Walbaum, 1792) collected from Samsun Province in Turkey were analyzed to determine the level of contamination by nine organochlorine pesticides (OCPs), namely α-hexachlorocyclohexane (α-HCH), β-HCH, γ-HCH (lindane), hexachlorobenzene (HCB), aldrin, 2,4′-dichlorodiphenyltrichloroethane (DDT), 4,4′-DDT, 2,4′-dichlorodiphenyldichloroethylene (DDE), 4,4′-DDE, and 15 polychlorinated biphenyls (PCBs) (PCB-28, -70, -74, -81, -99, -101, -118, -138, -153, -156, -170, -180, -183, -187, and -208), and their potential use as biomarkers to monitor levels of environmental contamination. OCPs and PCBs in the fat of fish eggs were extracted cryogenically and their concentrations were determined with a gas chromatography-electron capture detector (GC-ECD). The whiting eggs showed high OCP and PCB levels compared to the rainbow trout eggs. The median ∑ DDT values for whiting and rainbow trout eggs were 1601.62 ng g−1 fat (range 824.87–5049.81) and 406.49 ng g−1 fat (range 199.88–588.82); median ∑Indicator PCBs were 1264.24 ng g−1 fat (range 520.05–6140.32) and 82.11 ng g−1 fat (range 2.85–215.97); and median ∑ HCHs were 155.66 ng g−1 fat (range 35.45–330.40) and 13.48 ng g−1 fat (range 4.44–66.44), respectively. In the whiting eggs, the ∑Indicator PCB level was above the maximum residue limit (MRL) of 200 ng g−1 fat stated in the European Commission Regulation (EC) and Turkish Food Codex (TFC). In addition, there was a significant difference between the contamination levels of the eggs of the two species. In conclusion, it appears that fish eggs can serve as a valuable biomarker for the level of contamination of persistent organochlorine contaminants in different aquatic environments.



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The North Devon Coast & The Impact Of Climate Change

By Paul Homewood

 

 

This came to my attention the other day, and it shows just how deeply climate change hysteria has infected the business of government.

   image

https://www.northdevon-aonb.org.uk/about/management-plan-2019-2024 

 

For those not familiar with North Devon, it is in my view one of the most beautiful parts of the country, with some of the finest landscapes and seascapes. Much of it is wild and rugged, and in many ways unmatched in England.

Quite rightly, the North Devon Coast has been designated as an Area of Outstanding Natural Beauty, and there is an obligation on the local authorities involved to prepare regular Management Plans, in order to conserve and enhance the natural beauty there.

These plans involve all sorts of objectives and policies, such as landscapes, biodiversity, historical environment, infrastructure, farming, access and many others.

Tucked away in the latest Consultation Draft, you probably won't be surprised to learn, is a section called Environmental Quality and Climate Change.

The first paragraph states:

Climate change is one of the most significant pressures on the environment of South West England this is reflected in hotter and drier summers, warmer and wetter winters with more extreme weather and increased flood risk compounded by sea-level rise. The ability of the AONB Partnership to contribute to the mitigation of the effects of climate change is minimal in global terms. However, the Partnership can, and should, support local adaptation and mitigation initiatives which will have a positive impact

Apparently this is more important than the next paragraph, which goes on to talk about clean air, light pollution, clean bathing waters, and tranquillity, all things that any normal person would regard as of vital importance.

But what about the claims for climate change – hotter and drier summers, warmer and wetter winters with more extreme weather and increased flood risk compounded by sea-level rise?

 

Let's start with rainfall.

According to the long term Met Office data for the South West, winters are not getting wetter. Apart from the record wet winter of 2013/14, there has been nothing out of the ordinary at all about winter rainfall in the last decade or so.

image

image

https://www.metoffice.gov.uk/hadobs/hadukp/

Equally, there is no evidence that summers are getting any drier.

But what about temperatures?

The Report makes no attempt to explain why a warmer climate should put any significant pressures on the environment of South West England .

In any event, the actual data tells us a slightly different story.

Apart from the winter of 2015/16, other recent winters have not been unprecedented. What stands out most is the relative absence of exceptionally cold winters lately.

The Report talks about extreme weather, but as far as winter temperatures are concerned, winter weather was much more extreme in the past.

image

https://www.metoffice.gov.uk/climate/uk/summaries/datasets

As for summers, it is apparent that we have frequently had summers in the past just as hot as recent ones.

Even last summer was barely hotter than 1911.

As with winters, there is an absence lately of dismally cold summers, surely much more damaging to the environment.

image

https://www.metoffice.gov.uk/climate/uk/summaries/datasets

And what about flooding?

Perhaps one of the best indicators of extreme rainfall is the monthly stats. While we do see flash floods from time to time, such as Lynmouth and Boscastle, the floods that really do the damage are the result of long accumulations of rain.

The chart below plots all months with over 170mm:

image

https://www.metoffice.gov.uk/hadobs/hadukp/data/download.html 

The wettest month by far was November 1929, followed by December 1934. By contrast the wettest month in recent times was January 2014, yet this only ranks 4th wettest, behind October 1903.

There have been seven months in the last ten years that appear on the chart, slightly above the average of 5.3. Historically however, that frequency is by no means unusual, and the 2001-10 period had the fewest months on record.

Clearly there is no evidence here of increased flood risk.

 image

 https://www.metoffice.gov.uk/hadobs/hadukp/data/download.html

The reference to sea level rise is very much a red herring.

The long term rate of rise is 1.81mm/yr, about half of which is the result of sinking land. The rate is not increasing either.

Such a small rise will make no difference to the North Devon Coast.

170-161_meantrend.png

https://tidesandcurrents.noaa.gov/sltrends/sltrends_station.shtml?id=170-161

I cannot finish without a mention of wind farms.

1445341709_Fullabrook-Substation-Wind-Fa

Fullabrook Wind Farm, Devon

 

I find it incredible that Management Plan has virtually nothing to say about the impact on the environment of wind farms.

I have searched the whole document, and only found two references to wind turbines, both of which are mentioned only in passing.

Nowhere is there any suggestion that the wretched things be banned from the AONB, or even subject to local approval. Nor even a recognition of the damage to the environment already done.

Yet wind farms, such as Fullabrook, between Barnstaple and Ilfracombe, have probably done more to ruin one of England's finest landscapes than anything else in recent history.



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What is Urban Flooding?



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We’re saved! Study claims ‘Immediate fossil fuel phaseout could arrest climate change’

http://bit.ly/2TLWIR6 Scientists say it may still technically be possible to limit warming to 1.5C if drastic action is taken now Damian CarringtonEnvironment editor  @dpcarrington Tue 15 Jan 2019 11.00 ESTLast modified on Tue 15 Jan 2019 13.30 EST  The study found there is a 66% chance of staying below 1.5C above pre-industrial levels if immediate action is taken. Photograph: [...]

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The wacky ‘Green New Deal’

http://bit.ly/2Cq2dhD by David Wojick INSIGHTS   If the GND sucked up enough workers the economy would collapse.

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‘Misleading’: The New York Times Omitted Key Details About EPA’s Shutdown Woes

http://bit.ly/2Ru8S4o The Daily Caller by Michael Bastasch   'False view of what EPA inspectors do'

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BREXIT – 432 Vote Against May – Now What?

May plan bombs in rejection vote, 432 against to 202 in favor. Quelle Surprise... Can the UK please just get this over with and exit expeditiously? Continue reading

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[ASAP] Complex Monolayer Growth Dynamics of a Highly Symmetric Molecule: NTCDA on Ag(111)

TOC Graphic

The Journal of Physical Chemistry C
DOI: 10.1021/acs.jpcc.8b08523
jpccck?d=yIl2AUoC8zA


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[ASAP] Discrete and Continuum Analyses of Confinement Effects of an Ionic Liquid on the EDL Structure and the Pressure Acting on the Wall

TOC Graphic

The Journal of Physical Chemistry C
DOI: 10.1021/acs.jpcc.8b09630
jpccck?d=yIl2AUoC8zA


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[ASAP] Mechanistic Insight into the Nature of Dopants in Graphene Derivatives Influencing Electromagnetic Interference Shielding Properties in Hybrid Polymer Nanocomposites

TOC Graphic

The Journal of Physical Chemistry C
DOI: 10.1021/acs.jpcc.8b10999
jpccck?d=yIl2AUoC8zA


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[ASAP] Porous Materials Based on 3-Dimensional Td-Directing Functionalized Adamantane Scaffolds and Applied as Recyclable Catalysts

TOC Graphic

Chemistry of Materials
DOI: 10.1021/acs.chemmater.8b04508
cmatex?d=yIl2AUoC8zA


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[ASAP] Structure of a Two-Dimensional Silicate Layer Formed by Reaction with an Alloy Substrate

TOC Graphic

Chemistry of Materials
DOI: 10.1021/acs.chemmater.8b03988
cmatex?d=yIl2AUoC8zA


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[ASAP] Label-Free and Selective Single-Molecule Bioelectronic Sensing with a Millimeter-Wide Self-Assembled Monolayer of Anti-Immunoglobulins

TOC Graphic

Chemistry of Materials
DOI: 10.1021/acs.chemmater.8b04414
cmatex?d=yIl2AUoC8zA


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[ASAP] Silk-Derived Highly Active Oxygen Electrocatalysts for Flexible and Rechargeable Zn–Air Batteries

TOC Graphic

Chemistry of Materials
DOI: 10.1021/acs.chemmater.8b04572
cmatex?d=yIl2AUoC8zA


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[ASAP] Statistical Analysis of Nonuniform Volume Distributions for Droplet-Based Digital PCR Assays

TOC Graphic

Journal of the American Chemical Society
DOI: 10.1021/jacs.8b09073
jacsat?d=yIl2AUoC8zA


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[ASAP] Generalized Preparation of Two-Dimensional Quasi-nanosheets via Self-assembly of Nanoparticles

TOC Graphic

Journal of the American Chemical Society
DOI: 10.1021/jacs.8b12415
jacsat?d=yIl2AUoC8zA


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[ASAP] Biophysical Characterization of a Disabled Double Mutant of Soybean Lipoxygenase: The “Undoing” of Precise Substrate Positioning Relative to Metal Cofactor and an Identified Dynamical Network

TOC Graphic

Journal of the American Chemical Society
DOI: 10.1021/jacs.8b10992
jacsat?d=yIl2AUoC8zA


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