NNadir
NNadir's JournalSome Good News: Glycan Shielding on SARS-CoV2 Is Lower Than That of Vaccine Intractable HIV.
This morning I watched an online lecture by Scientists at the University of Southampton, on the subject of glycosylation in the "Spike Protein" SARS-CoV2 viruses. Glycosyl groups are small variable sugar polymers that are attached to amino acid groups in proteins. These glycans are very much involved in immune responses.
Only in recent years has it become possible to map and sequence these sugars using software to process high resolution mass spectrometry signals.
Anyway the lecture led me to a nice paper - it has yet to be peer reviewed - on the subject of the relative glycan density on proteins, in a paper published by two of the scientists who presented the lecture this morning.
It is here: Vulnerabilities in coronavirus glycan shields despite extensive glycosylation (Crispin, Allen, Seabright et al., BioRxiv, February 2020.
This preprint is open sourced; anyone can read it.
Viruses can exhibit "Glycan Shielding" which depending on the density of the glycans on the surface, can prevent the access by neutralizing antibodies that destroy the virus, giving immunity.
The high density of glycans on HIV is a big part of the reason that more than 30 years into the AIDS crisis, we still don't have a viable vaccine.
A graphic from the paper:
The caption:
Apparently the SARS-CoV-2 virus lacks this high degree of glycosylation. Although the molecule is reportedly highly glycosylated there are still potential weak spots that give hope that vaccine development will proceed faster than it has with AIDS.
As HIV shows, vaccine development is never a "slam dunk," but this bit of good news suggests that the development of a vaccine for this disease may prove somewhat less challenging than has been observed in that case.
The Historian Eric Foner: "Buchanan did not recommend drinking Lysol.
I confess that I have a certain fondness for these polls of historians ranking Presidents. In general I more or less agree with most of them, with the exception of the rating of U.S. Grant as a poor or mediocre President. I consider Grant to have been the second greatest President of the 19th century, after Lincoln himself. (Good luck with that, NNadir!)
Yesterday on CSPAN there was a discussion between Harold Holzer, a well known expert on Abraham Lincoln, Amity Shlaes, a Calvin Coolidge scholar, moderated by Brian Lamb, designed to market the new CSPAN book on the Presidents, beginning with the top (Lincoln) and working the way down. The discussion was held in FDR's New York City Residence, now owned by Hunter College. Ms. Shlaes argued that President Coolidge deserves placement among the top 5 Presidents because of his wonderful work on the economy and budget. (Good luck with that Ms. Shlaes!)
We can, of course, in general disagree with these rankings, but it does seem there will be one case pretty clear cut:
This commentary was in Bloomberg's this morning, comparing Lincoln and, um, Trump, since Trump smeared Lincoln simply by being near his memorial:
Trump and Lincoln Are Opposite Kinds of Presidents
It concludes with the comments of the famous historian Eric Foner, of Columbia University on worst Presidents, generally taken to be James Buchanan, Andrew Johnson, Warren G. Harding (Coolidge was his VP who assumed office when Harding died) and John Tyler, (and let's not forget Franklin Pierce.)
The Bloomberg article concludes with this comment on Buchanan vs Trump vs Johnson.
Division and dithering: These are the chief reasons why Buchanan ranks near the bottom, and the reasons why Trump, post coronavirus, is poised to sink beneath him. Of course, some believe Trump, encumbered by corruption, has already sunk to the lowest depth of presidential history. Yet his catastrophic inaction amid the pandemic suggests he has more room to descend. I wrote Eric Foner, an expert on Reconstruction, to ask what he makes of the competition at the bottom of the presidential pile. It seems fitting to give the last word to one of Americas greatest historians.
Buchanans involvement in the infamous Dred Scott decision and then support for the fraudulent Lecompton Constitution certainly push him toward the bottom, Foner wrote back. On the other hand he refused Southern demands to recognize the legality of secession and ironically ended up as head of a northern, pro-Union administration. His annual message to Congress made a strong argument that secession is unconstitutional. I rank Andrew Johnson below him as well as our current president. Buchanan did not recommend drinking Lysol.
The bold is mine.
Since Republicans care a great deal more about fetuses than children or adults, maybe this paper...
...can be utilized to convince them to give a rat's ass insisting that we really shouldn't care more about haircuts and bars than people.
Second-Trimester Miscarriage in a Pregnant Woman With SARS-CoV-2 Infection (David Baud, MD, PhD1; Gilbert Greub, MD, PhD2; Guillaume Favre, MD1; Journal of the American Medical Association (JAMA), published on line April 30, 2020)
This woman's medical outcome is of course a tragedy, but Republicans seem to have a more narrow definition of tragedy than real human beings do, and perhaps this might drill through their thick heads.
The Global Disinformation Index:
I'm on the mailing list for the AAAS blog, and there was a chat today on the AAAS blog with Dr. Danny Rodgers of the "GDI," the Global Disinformation Index.
It advertises a "neutral" approach to statistically rate the credibility of information.
Dr. Rodgers biographical info (from the website) is this:
From the "live chat" a participant asked:
Since so much of this disinformation seems to be disseminated via social media channels, can you recommend accessible sources for accurate information that folks could be referred to when responding to false claims?
Any success stories you might share for those if us struggling to reach people with accurate info?
Thanks!
...to which Dr. Rodgers replied:
Remember, too, re platforms like Facebook: on the internet, when the product is free, YOU'RE the product.
The site, in their "research heading" describes their methodology:
The GDI rating system takes a whole-of-site approach to understand the risk of a news site disinforming its readers. Advertisers and ad tech companies can use the GDI ratings to shape brand safety decisions about where their ad spends end up.
[link:https://disinformationindex.org/wp-content/uploads/2019/12/GDI_Index-Methodology_Report_Dec2019.pdf|Rating
Disinformation Risk: The GDI Methodology]
A brief excerpt:
...The Content pillar contains indicators that assess different elements of news articles published on a specific domain, including their credibility, sensationalism, neutrality and impartiality. As for all of the pillars, each of these indicators was chosen to identify and measure a specifc disinformation signal or fag (see Appendix A). How a domains content is presented and covered is an important indicator of the disinformation risk of the domain. Some of the more pernicious forms of disinformation occur when news domains present a variety of straight and accurate news with a few maliciously and purposefully inaccurate stories in order to gain and manipulate users trust
...The Operations pillar assesses the underlying policies and rules that domains abide by to establish trust and reliability in the quality of the news being published. The integrity of a news organisation and its site is a good indication of whether checks and balances are in place to prevent or lower the risk of disinformation from appearing on a site...
...The Context pillar assesses the overall credibility and reliability of news-related information provided by a specifc domain. The overall conduct of a site can go beyond a sample of content and the operational policies in place. It relates to how the news domain is viewed: the overall perceived trustworthiness of the site. The disinformation fags assessed in this pillar are related to credibility, trustworthiness, conficts of interest and biasedness. As these signals are not easily measurable by analysts, this pillar and the questions in it are assessed by country-level experts working on media and related issues...
I have only superficially evaluated this Index, but the concept strikes me as interesting and worthy of some more study to understand their approach.
We certainly do live in the world of disinformation, driven not just by Rupert Murdoch and Fox "News" but by many others as well. A successful system like this might well help raise a level of critical thinking.
Clinical Improvement in Covid Remdesivir Double Blind Study Is Not Statistically Significant.
This morning I'm seeing noise that Remdesvir is working in treating Covid patients.
Yesterday, the results of the first randomized clinical trial were published.
The results study were published yesterday in Lancet: Remdesivir in adults with severe COVID-19: a randomised, double-blind, placebo-controlled, multicentre trial.
(The publication is open sourced; anyone can read it.)
Here is the summary of the findings, for convenience:
A small benefit was observed, however it cannot be ruled out that this benefit derived from chance.
I wouldn't call the results "clear evidence" that this drug is a worthy treatment, unless I'm missing something.
We May Have Hit The Annual Maximum CO2 Observatory at Mauna Loa Unusually Early This Year.
As I've indicated many times before, somewhat obsessively I keep a spreadsheet of the weekly data at the Mauna Loa Carbon Dioxide Observatory, which I use to do calculations to record the dying of our atmosphere, a triumph of fear, dogma and ignorance that did not have to be, but nonetheless our atmosphere is dying.
In my last post touching on this point, this one, I wrote:
The record set then, for the week beginning April 5, 2020, was 416.45 ppm, 3.78 ppm higher than the same week of the previous year.
If we look at the data from this week, and from last week (416,27 ppm) as well, we will see that both are lower than the figure observed on April 5.
Here is this week's data:
Weekly average CO2 at Mauna Loa
Week beginning on April 19, 2020: 415.88 ppm
Weekly value from 1 year ago: 413.71 ppm
Weekly value from 10 years ago: 393.25 ppm
Last updated: April 26, 2020
The difference for this week's reading compared to last year of the same week, 2.17 ppm is very close to the average of these readings in the 21st century, which is 2.16 ppm. The average for these readings for the 20th century, going back to 1975 was 1.54 ppm in comparison to the same week of the previous years.
I took a look at the data going back 44 years, to discover the earliest dates of annual peaks, and found that there were six times in the last 30 years in which the peak occurred in April, eight such years overall. April 5, if this date holds for this year, is the second earliest date, marking the beginning of a peak week, at which the peak has ever occurred. The earliest peak date was a peak set in April 4, 1999. It is effectively same week of the current observation owing to calendar fluctuations. The previous year, 1998, was until 2016, the record setting year for carbon dioxide increases, 2.93 ppm over 1997. Two readings in this decade, 2015 and 2016, superseded that record, both coming in at 2.99 ppm over the previous year. 2018 reached 2.83 ppm.
In 1998, the peak was reached on the week of May 24, 1998, when it reached the (then) disturbing level of 369.94.
In 1980, the peak arrived on the week of June, 1, 1980, the latest date recorded for such a peak. In that week, the peak value was 340.61 ppm. Except for some then obscure academics, including some who may have been aware of Arrhenius's prediction of climate change in the 19th century, no one probably thought much about that number.
Why, if it holds, the peak came so early this year is unknown. One may surmise that it is an effect of the severe restrictions placed on the car CULTure brought on by the Covid-19 catastrophe. We have been living with reduced access to our precious cars, as people always deign to inform me, without which we cannot live. Even with restrictions on our cars, it does seem to me that many of us are still alive, but perhaps that will change.
Another possibility is that as a result of climate change, spring is arriving earlier in the Northern Hemisphere, as carbon dioxide readings continue each year to decline through September before beginning to rise again. However a survey of the data shows that an April peak was observed as early as 1986, on the week of April 27, 1986, when the concentration of carbon dioxide was 350.71.
It is therefore difficult to say what this early peak occurred this year, only that it did.
At the Mauna Loa CO2 Observatory website the following is written about the effect of Covid-19 on climate change, which is a fair statement:
There have been many inquiries whether we can see in our CO2 measurements at Mauna Loa and elsewhere the slowdown in CO2 emissions from the burning of fossil fuels. That drop in emissions needs to be large enough to stand out from natural CO2 variability caused by how plants and soils respond to seasonal and annual variations of temperature, humidity, soil moisture, etc. These natural variations are large, and so far the "missing" emissions do not stand out, but we may see them as the year progresses. Here is an example: If emissions are lower by 25%, then we would expect the monthly mean CO2 for March at Mauna Loa to be lower by about 0.2 ppm. When we look at many years of the difference between February and March we expect March to be higher by 0.74 ppm, but the year-to-year variability (one standard deviation) of the difference is 0.40 ppm. This year the difference is 0.40 ppm, or 0.33 below average, but last year it was 0.52 ppm below average.
Most of the emissions come from urban areas, so that it may be easier to see the effect downwind of cities, although also in that case they need to stand out from natural variations. Only measurements of carbon-14 in CO2 would enable us to cleanly separate fossil sources of CO2 from ecosystem sources and sinks regardless of how variable the latter are.
If any of these figures disturb you, don't worry, be happy. Cruise around the internet to find any of zillions of web pages talking all about how great solar energy is and how it will save the day.
It hasn't saved the day; it isn't saving the day; and it won't save the day, but it's the thought that counts.
Have a pleasant Sunday evening; stay healthy; stay safe.
The Greater, Ignored Plague, Disease and Water Use and Storage In India.
The paper I'll discuss in this post is this one: Household Water Storage Management, Hygiene Practices, and Associated Drinking Water Quality in Rural India (Sarah L. McGuinness,* Joanne OToole, S. Fiona Barker, Andrew B. Forbes, Thomas B. Boving, Asha Giriyan, Kavita Patil, Fraddry DSouza, Ramkrishna Vhaval, Allen C. Cheng, and Karin Leder, Environ. Sci. Technol. 2020, 54, 8, 5062-5070).
Echolalia is the practice of repeating yourself or others without meaning, often thought as a sign of psychiatric symptoms, senility, for example, among old people.
And then, of course, there is a process of repeating one's self for emphasis, as when nothing meaningful gets through until it is, or nearly is, too late. (Think of the then old man Winston Churchill whining that the Nazis might be, um, bad people in the 1930's, when he was largely ignored.)
As the poet Amari Baraka put it in one of my favorite pieces of verse:
And what I have learned
of it, to repeat, repeated
as a day will repeat
its color, the tired sounds
run off its bones
...as a day will repeat its color, the tired sounds run off its bones...
I am old and the sounds that run off my bones are tired sounds...and I repeat myself, and whether what I write is senile echolalia or a warning issued in the hope it is not entirely too late is not for me to judge, but for any interested reader to judge, if there are interested readers: I am infinitely more obscure than Winston Churchill was in 1938 and everything I say, whether it is echolalia or otherwise, will die with me, obscure.
One of the tired sounds I repeat is that so called "renewable energy" is a grotesque failure if the reason for embracing it was in any way connected to addressing climate change. This should be clear from the simple reality that climate change has not been addressed. It is getting worse, not better.
In 1976, a guy named Amory Lovins, then 29 years old, wrote this piece of unreferenced appalling drivel on the subject of Energy and the Environment: Energy Strategy: The Road Not Taken? in a social science journal, Foreign Affairs. The claim made in this intellectually appalling text, that so called "renewable energy" and energy conservation would save the world has become "The Road Most Taken" in attempting to address climate change: Many hundreds of thousands of scientific papers have been written on the subject of so called "renewable energy," the research funded by rich sources of grants, and as some people on this website never tire of pointing out, wind farms and solar cells are enormously popular, if entirely ineffective, bourgeois conceits.
Since 1976, Amory Lovins, who is now 73 years old has been engaged in echolalia, having become famous for writing the aforementioned piece of appalling drivel, declaring himself the Chief "Scientist" of an ignorance factory called the "Rocky Mountain Institute," inviting people to tour, for a fee, his obscene (but very energy efficient) McMansion in the very, very, very upscale community of Snowmass, Colorado, just down the road from the hip, hip, hip, hip skiing community of the "Stars," Aspen. Amory Lovins' echolalia has been to repeat, "as the day repeats its colors," the hip, hip, hip mantra that energy conservation and so called renewable energy will save the world. He makes a lot of money doing this, but he still asks you to contribute money to support his "genius."
In my opinion, he was senile - or at least uneducated - at the age of 29, since the subject of conservation and energy had been discussed in predictive terms that actually involved accurate predictions, based on data as opposed to handwaving, by the British economist William Stanley Jevons. His famous theory is known as "Jevons Paradox" which states, simply that the more efficiently a resource is utilized, the more of that resource will be utilized.
I repeat myself, "as the day will repeat its color..."
Here is what I wrote about Amory Lovins theology back in 2014, since I am not really a modern liberal who thinks that liberalism involves supporting huge wind farms in pristine wilderness, including offshore wilderness, and electric cars laced with cobalt mined by enslaved children in Congo, but I am an old liberal, inasmuch as I care about poverty, like Lyndon Johnson, like FDR and his remarkable wife, Eleanor Roosevelt:
Current Energy Demand; Ethical Energy Demand; Depleted Uranium and the Centuries to Come
..."as the day will repeat its color"...
Here is another thing I repeat frequently:
The amount of money "invested" in so called "renewable energy" in the period between 2004 and 2018 is over 3.036 trillion dollars; dominated by solar and wind which soaked up 2.774 trillion dollars.
Source: UNEP/Bloomberg Global Investment in Renewable Energy, 2019
Then I point out, "as the day will repeat its color" that this expenditure on so called "renewable energy" took place on a planet where more than 2 billion people lack access to even primitive sanitation using this link from the organization, recently maligned by the US's Chief Ignoramus, the World Health Organization:
Lack of sanitation for 2.4 billion people is undermining health improvements
To step outside of echolalia briefly this 2015 link has an update: WHO and UNICEF launch updated estimates for water, sanitation and hygiene
Then I point out, "...as the day will repeat its color..." that these billions of dollars that have been spent on so called "renewable energy," exceeds the entire GDP of India, a nation with 1.35 billion people in it, for everything Indians do, eat, educate themselves, build shelters, factories farms and drink.
This, I guess, brings me to the paper referenced at the outset of this repetitious diatribe. From the introductory text:
The optimal approach to ensuring safely managed drinking water is to provide treated piped supplies directly to households.4,6?9 However, while access to piped water supplies in LMICs is increasing,3 financial and logistical barriers to their widespread implementation remain, and existing piped supplies are often intermittent, compromising water quality and availability.6,10 Most previous trials of low-cost water treatment solutions for LMICs have evaluated in-home pointof- use interventions such as chlorine products and filters, but these have recognized limitations, including the need for high user adherence to consistent sustained behavior change.7,11 Few studies have evaluated alternative approaches, such as community-level treated water supplies, in part because randomized trials of such interventions are challenging to design and conduct.12 The delivery of treated water supplies or treatment of existing supplies reduces the requirement for user behavior change, increasing the potential for sustained and consistent access to clean water.13,14 However, fecal contamination of water can still occur during collection, transport, or subsequent storage of water within the household.8,9 Household water storage is a common practice in settings where on-premises supplies are unavailable or intermittent.9,15...
The authors toured rural Indian villages, where they conducted surveys and then sampled the drinking water of the people they surveyed and ran microbiological tests for fecal pathogens. Some excerpts of their procedures:
...Water Sampling Visits. During the pretrial consent process, permission was sought for collection of household water samples at subsequent study visits. Among a random sample of households (165 per village per survey round), drinking water was collected by a designated water sampling team. Participants were asked If you or your child wanted a drink of water right now, where would you get the water from? Permission was then requested to view the relevant stored water container or water source, and participants were asked to collect drinking water in the usual manner. This water sample was obtained from the householder and decanted into a sterile 120 mL sample bottle containing sodium thiosulfate sufficient to neutralize 15 mg/L chlorine in 100 mL of the sample (Colilert, IDEXX Laboratories, USA) by a member of the water sampling team using an aseptic technique. The water sampling team documented the storage vessel location...
The documentation also included details about how the water was stored, covered or uncovered, and how it was delivered, by ladle, for example. The scale of the documentation can be seen in table 1 in the paper, which reports on the findings of homes with contaminated water:
Some graphical results from the paper:
The caption:
Some sample pictures of storage systems observed:
The caption:
The findings of risks in the sampled water:
The caption:
Some longitudinal data:
The caption:
The data speaks for itself, doesn't it?
...data...
..."as the day will repeat its color"...
As for that 29 year old kid referenced above who was not familiar with Jevons in 1976 but was declared a "genius" by some people who also hadn't read Jevons, and of course, by himself, he is now 73 years old; he was born in 1947, the age of the "baby boomer."
I am a baby boomer, profoundly ashamed of my generation and the way we so facilely latched on to what can only be described as silliness and delusion.
Our mantras about so called "renewable energy" did not work; they are not working; they will not work.
To my knowledge, there isn't data on the carbon dioxide concentrations in 1947, when Lovins was born, but the data at the Mauna Loa carbon dioxide observatory goes back to 1959, when the concentration was 315.97 ppm.
Less than 20 years later, the world would embrace the "conservation and renewable energy" Mantra Lovins proposed.
Here is the latest weekly data on the concentration of carbon dioxide in the planetary atmosphere as of this writing:
Weekly value from 1 year ago: 413.63 ppm
Weekly value from 10 years ago: 3 92.85 ppm
Last updated: April 25, 2020
..."as the day will repeat its color"...
I do not know what world energy demand was in 1947 when Amory Lovins, but I do know what it was in 1973, just three years before he wrote his now famous drivel about so called "renewable energy" and conservation. It was 253 Exajoules, as reported in the 2011 World Energy Outlook.
..."as the day will repeat its color"...
In the most recent year that we have data, 2018, world energy demand was less than an Exajoule short of 600 Exajoules.
By the way, world wide, energy efficiency, has risen dramatically since 1976.
At times, we tend to focus on the income disparity of the United States, which is now sure to grow, as the right wing through inattention and manipulation has brought on what is sure to be a world wide economic depression.
..."as the day will repeat its color"...
As scientist who has echolalia dating back to 1976 uninfluenced by data is not actually a "scientist" at all, even if his title is "Chief Scientist" of an organization like say, "The Rocky Mountain Institute." Arguably, he is nothing more than the leader of a cult.
Hopefully, in this time of cults, political, economic, spiritual and otherwise, this emerging worldwide economic depression doesn't end like the last one did, with the worst war in human history.
One way to prevent that in my perhaps naive opinion is to consider that those people in India are human beings, just like people in Africa, in Mexico, in Canada, and, indeed the United States, that they matter, as all human beings worthy of being called human beings matter, because there is no justifiable reason that these people in India and in similar places should...
...while we obliviously wax romantic about our Tesla electric cars, wind turbines, and efficient refrigerators.
I might mention that one of the best and well known ways to sterilize water, and in fact, to remove some very dangerous pollutants is to irradiate it with ionizing radiation.
As the day will repeat its color, even in a time of the rising celebration of ignorance, I continue to believe, even as my life approaches its end, "the tired sounds running off my bones" that intelligence and decency can yet prevail.
I wish you health and safety in this spring weekend, and some measure, within the limits of our time, peace and happiness.
'A disaster': Roche CEO's verdict on some COVID-19 antibody tests
'A disaster': Roche CEO's verdict on some COVID-19 antibody testsRoche is one of the leading companies in the world in the diagnostic field, and manufacturers equipment that meets the CLIA regulations for medical testing, a "go to" company.
I am not involved in any way in diagnostics, but I worked closely with Roche scientists in the early days of the AIDS crisis when people were dying without access to drugs. There was a quality problem with an intermediate that just bordered on the regulatory limits. The decision was not an easy call to make at all; again lives hung in the balance. People would die without that drug, quite literally. I however was very impressed by the professionalism and seriousness with which the Roche Scientific team considered the issue; and was impressed with how hard they worked to resolve the issue in a way that, um, saved human beings.
I mention this because one might hear in connection with this article, all kinds of stuff about big bad corporate people squashing little guys. I personally don't take it that way at all. I suspect the Roche CEO is being honest. Yes, he has skin in the game, but it is inaccurate and in fact, intellectually dishonest, to think that all Pharma executives are "in it for the money."
That's all I'll say on that score.
Roches (ROG.S) diagnostics business has moved out of the shadow of its main medicines unit during the pandemic, as the Swiss pharma giant confirmed its 2020 sales and profit outlook amid rising demand for COVID-19 testing...
...An erroneous false-positive result could lead to the mistaken conclusion that someone has immunity. In developing its test, Schwan said, Roche scrutinised some existing products for reliability before rejecting them.
Its a disaster. These tests are not worth anything, or have very little use, Schwan told reporters on a conference call. Some of these companies, I tell you, this is ethically very questionable to get out with this stuff.
Schwan said there were about 100 such tests on offer, including finger-prick assays that offer a quick result. The Basel-based company declined to specify which rival tests it had studied, but said it was not referring to tests from established testing companies...
...Schwan did not release figures for its tests specificity, or how many false-positives can be expected, but promised it would be reliable because Roche had successfully found the antibody produced by the body after exposure to the novel virus.
This is really what matters, he said. Every kind of amateur could produce an antibody test. The two of us could do it overnight in the garage. Thats not the problem.
The question is, does it really work? And for that, you have to do testing and validation, he added.
"From below, from basements, from cellars, from sewers they rose..."
As I've remarked a few times in this space, in this lockdown I'm translating Camus' La Peste (The Plague) from French into English, appropriate in these times.
I found this paragraph - presaging the coming human plague, where he describes massive numbers of rats crawling of from under the city dying - despite being grotesque, to be quite evocative and profoundly metaphorical, and in some ways, relevant, more than half a century after Camus's work was published, to the "rise" of Repuplicans in Washington.
My translation:
The original French:
The more things change, the more they stay the same, n'est pas?.
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