pkrein

8 ms·

31.
by pkrein 8y ago
(1) When we investigated this last year the ammonia synthesis capex looked untenable and we didn't see a path to lower that capex. Re:injection wells... they are super common in Texas/Louisiana region as well, which happens to be
32.
by pkrein 8y ago
Charm co-founder here... (1) electrolysis is much more expensive than steam methane reformation, so unfortunately I don't think it's gaining much steam as a real hydrogen production method. (2) typical ammonia fertilizer applicati
33.
by pkrein 8y ago
Charm co-founder here... thanks for the typo find, fixed! People have been lobbying and protesting for years, I don't believe it's going to fix things on its own. Policy makers need legitimate technology options to put support beh
34.
by pkrein 8y ago
Charm co-founder here... Two quick notes: (1) we agree wholeheartedly on the experts front — for the core technology around gasification we've been working with a variety of PhDs, national labs and companies with extensive previous gas
35.
by pkrein 8y ago
Charm co-founder here... We are not betting on hydrogen fuel cell cars. There is an existing $120B/year market for hydrogen used in the production of ammonia fertilizer and oil refining. That hydrogen is currently produced from fossil
36.
by pkrein 8y ago
Flow rate of biomass or hydrogen? Per unit we expect roughly 10-20 tons per day of biomass, and 0.5-1 ton per day of hydrogen. Allowable variance is low, but depends on the customer.
37.
by pkrein 8y ago
Charm co-founder here... possibly, but it's likely more valuable being sold as potash.
38.
by pkrein 8y ago
Stanford Prof. Sally Benson's talk here is a great overview: https://youtu.be/lIVwbSnD0AI?t=127 Specifically, she talks about the results of the Sleipner Project in the North Sea, where they've measured leakage ra
39.
by pkrein 8y ago
One of the Charm co-founders here. Great questions, and you're correct the point is to find an economically profitable basis for sequestration. 1. In North America alone we have 32,000 gigatons of geological sequestration storage capac
40.
by pkrein 8y ago
Overproduction of biochar relative to closed loop heating needs, and underground CCS.
41.
by pkrein 8y ago
Lots of discussion here, but is anybody here working on a negative emission technology that might help? Would love to hear about it! We’re working on carbon negative industrial hydrogen at Charm Industrial, and we’re hiring: https:/&#
42.
by pkrein 8y ago
Charm Industrial | Mechanical Engineer | San Francisco | Full Time | Onsite Charm Industrial's mission to stop climate change, profitably. Our focus is on the industrial hydrogen market, where we've developed a process that produc
43.
by pkrein 8y ago
This has big implications for the Fermi Paradox: https://en.wikipedia.org/wiki/Fermi_paradox In particular, the jump from unicellular to multicellular life is (was) one of the top leading candidates for the Great Filte
44.
by pkrein 8y ago
For the past 40 years we've viewed climate change as a political problem (see "Losing Earth" from the NY Times for a history of this [1].) Like you, I no longer have any faith that politicians will be able to solve the proble
45.
US accuses China of 'super aggressive' spy campaign on LinkedIn(cnbc.com)
3 points by pkrein 8y ago|0 comments
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by pkrein 9y ago
thanks jj! happy to get you into the kafka beta — shoot me an email peter at segment.
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by pkrein 9y ago
completely theoretically with nice round numbers, let's say a SaaS company has $50m in annual revenue, and they want to grow to $100m in annual revenue next year. lastly, let's assume time required to pay back the cost of customer
48.
by pkrein 9y ago
Any individual connection is simple. Website to Mixpanel? Easy. Mobile app to Facebook App Events? Also simple. Both website and mobile app to warehouse? Bigger investment but still doable. Data out of Stripe and Zendesk into the warehouse?
49.
by pkrein 9y ago
thanks justin! would you be open to putting a badge on your site (similar to mixpanel's)? we also have an incubator/accelerator discount for pre-series a, just email friends@segment.com and we can get you set up.
50.
by pkrein 9y ago
thanks for being a customer :)
51.
by pkrein 9y ago
Shoot. I'm sorry this happened. I'd love to chat more about your experience with Branch SDK/APIs recently. I found your email in another HN comment and will reach out shortly. On the other two issues... Analytics.js launched
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Segment (YC S11) is supporting developers to work on open source for 3 months
1 points by pkrein 9y ago
53.
Exoplanet Atmosphere Detected for First Time(iopscience.iop.org)
2 points by pkrein 10y ago|0 comments
54.
by pkrein 10y ago
I had never skateboarded before getting a boosted board. It took me a week of commuting (20 minutes each way) to get somewhat comfortable at the top speed. There are three speed caps, slow medium fast, so you sort of level up after each rid
55.
by pkrein 11y ago
You’re right. There are a lot of sources out there. It’s a ton of work for companies to build out their own pipelines and learn every new API. We want to save them from that burden so that they can focus on the analysis. We’ll be adding man
56.
by pkrein 11y ago
Yep, as part of this launch we've revised our pricing. If you commit to an annual plan (even self-service plan) we will load all of your historical data, not just 60 days. Just email friends@segment.com after signing up for the paid an
57.
by pkrein 11y ago
Actually, we don't have any interest in being a visualization tool, and are super focused on building customer data infrastructure of the future. This product release is in close partnership with our BI partners (Looker, Mode, Wagon, P
58.
by pkrein 11y ago
We raised $600k coming out of YC S11 demo day for the classroom lecture tool. We kept costs low, and paid ourselves just enough to live on for ~2 years (plus servers, shared apartment doubled as office, etc.) We burned down to about $80k in
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by pkrein 11y ago
Scrolling down the posted page you can see the details on loading latency: it ranges from daily loading on the free plans to 30 minutes on the business tier.
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by pkrein 12y ago
The whole system of need-based financial aid seems to be effectively moving tuition towards perfectly elastic pricing based on how much students can pay. Universities raise the price of tuition, then increase financial aid for the subset

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