Gyan C Mehta ๐Ÿ‡บ๐Ÿ‡ธ๐Ÿ‡ฎ๐Ÿ‡ณ Profile
Gyan C Mehta ๐Ÿ‡บ๐Ÿ‡ธ๐Ÿ‡ฎ๐Ÿ‡ณ

@GyanCMehta

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Learning and curiosity is a lifelong venture. IIT Kanpur (Physics 1968, Gold medalist). Brother, Husband, Father, Grandfather, Uncle, Math mentor.

Cincinnati, OH
Joined May 2018
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@GyanCMehta
Gyan C Mehta ๐Ÿ‡บ๐Ÿ‡ธ๐Ÿ‡ฎ๐Ÿ‡ณ
9 hours
RT @j_dekoninck: We just released the evaluation of LLMs on the 2025 IMO on MathArena! Gemini scores best, but is still unlikely to achieveโ€ฆ.
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@GyanCMehta
Gyan C Mehta ๐Ÿ‡บ๐Ÿ‡ธ๐Ÿ‡ฎ๐Ÿ‡ณ
2 days
for all positive integers aa and bb with a+bโ‰คn+1, the point (a,b) lies on at least one of the lines; and exactly k of the n lines are sunny. .
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@GyanCMehta
Gyan C Mehta ๐Ÿ‡บ๐Ÿ‡ธ๐Ÿ‡ฎ๐Ÿ‡ณ
2 days
IMO 2025 P1 .A line in the plane is called sunnysunny if it is not parallel to any of the xโ€“axis, the yโ€“axis, or the line x+y=0.Let nโ‰ฅ3 be a given integer. Determine all nonnegative integers k such that there exist n distinct lines in the plane satisfying both of the following:.
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@GyanCMehta
Gyan C Mehta ๐Ÿ‡บ๐Ÿ‡ธ๐Ÿ‡ฎ๐Ÿ‡ณ
10 days
RT @buitengebieden: The 4th dog is not running. ๐Ÿคฏ
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@GyanCMehta
Gyan C Mehta ๐Ÿ‡บ๐Ÿ‡ธ๐Ÿ‡ฎ๐Ÿ‡ณ
10 days
RT @Varun55484761: Turkish media outlet TRHaber reports India's alleged offer to supply its LR-LACM to Greece, sparking security concerns iโ€ฆ.
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@GyanCMehta
Gyan C Mehta ๐Ÿ‡บ๐Ÿ‡ธ๐Ÿ‡ฎ๐Ÿ‡ณ
12 days
RT @agrawalmanindra: It was an enlightening experience for us discussing medical technology with honorable CM @myogiadityanath. His depth oโ€ฆ.
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@GyanCMehta
Gyan C Mehta ๐Ÿ‡บ๐Ÿ‡ธ๐Ÿ‡ฎ๐Ÿ‡ณ
13 days
Tweet media one
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@GyanCMehta
Gyan C Mehta ๐Ÿ‡บ๐Ÿ‡ธ๐Ÿ‡ฎ๐Ÿ‡ณ
13 days
Now he's told: surrender passport or face Interpol!.โ€œKicked out as a useless thing.โ€ Even Nobel winners can't beat bureaucracy. ๐Ÿคฏ #AndreGeim #NobelPrize #Citizenship #Graphene #Netherlands #Brexit.
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@GyanCMehta
Gyan C Mehta ๐Ÿ‡บ๐Ÿ‡ธ๐Ÿ‡ฎ๐Ÿ‡ณ
13 days
Nobel laureate loses citizenship!.Physicist Andre Geim, who co-discovered graphene, just got stripped of Dutch nationality โ€” 13 yrs after becoming British to accept a knighthood. ๐Ÿ‡ฌ๐Ÿ‡ง.๐Ÿ‡ณ๐Ÿ‡ฑ Netherlands bans dual citizenship.
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@GyanCMehta
Gyan C Mehta ๐Ÿ‡บ๐Ÿ‡ธ๐Ÿ‡ฎ๐Ÿ‡ณ
14 days
RT @ANI: #WATCH | Delhi: Dr Mohit Gupta, Professor of Cardiology, GB Pant Hospital says, "In our own study on 1,600 patients with heart attโ€ฆ.
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@GyanCMehta
Gyan C Mehta ๐Ÿ‡บ๐Ÿ‡ธ๐Ÿ‡ฎ๐Ÿ‡ณ
14 days
If someone dies soon after bite despite PEP, likely the virus had already reached CNS. If someone dies months later, that fits within the typical incubation window. The โ€œARV given too lateโ€ explanation means the virus was already in peripheral nerves at time of administration.
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@GyanCMehta
Gyan C Mehta ๐Ÿ‡บ๐Ÿ‡ธ๐Ÿ‡ฎ๐Ÿ‡ณ
14 days
.5. Typical incubation: 20 to 90 days Range: As short as 4 days, or as long as 1 year or more (rare). Depends on: Site of bite (closer to CNS = shorter) Severity of wound Viral load Immune status Strain of virus . .
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@GyanCMehta
Gyan C Mehta ๐Ÿ‡บ๐Ÿ‡ธ๐Ÿ‡ฎ๐Ÿ‡ณ
14 days
So: If bite introduced virus but it hasnโ€™t reached nerves โ†’ vaccine + RIG can prevent infection. If virus has entered nerves before PEP โ†’ vaccine usually ineffective. If bite did not transmit virus, the vaccine still acts as insurance during the incubation window,.
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@GyanCMehta
Gyan C Mehta ๐Ÿ‡บ๐Ÿ‡ธ๐Ÿ‡ฎ๐Ÿ‡ณ
14 days
4. Rabies virus enters muscle tissue first, replicates locally before reaching the peripheral nerves. Vaccine given early can mount an immune response before virus enters the nervous system. RIG neutralizes virus locally in high-risk wounds and gives immediate passive immunity.
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@GyanCMehta
Gyan C Mehta ๐Ÿ‡บ๐Ÿ‡ธ๐Ÿ‡ฎ๐Ÿ‡ณ
14 days
PEP is preventive, not curative โ€” once virus enters CNS, vaccine and RIG (rabies immunoglobulin) are largely ineffective. This is rare but devastating, and highlights the importance of immediate and complete PEP,.
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@GyanCMehta
Gyan C Mehta ๐Ÿ‡บ๐Ÿ‡ธ๐Ÿ‡ฎ๐Ÿ‡ณ
14 days
3. "Early death" refers to rabies developing in individuals shortly after initiating post-exposure prophylaxis (PEP). Why --The person was likely already in the incubation stage, and the virus had reached the nervous system before PEP was initiated ormounts an defense.
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@GyanCMehta
Gyan C Mehta ๐Ÿ‡บ๐Ÿ‡ธ๐Ÿ‡ฎ๐Ÿ‡ณ
14 days
The immune system doesnโ€™t mount a robust peripheral antibody response until late stages โ€” sometimes not at all before death.Reference: .2. Ante-mortem rabies diagnosis in humans is difficult because the virus is localized in the nervous system and shedding in fluids is variable.
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@GyanCMehta
Gyan C Mehta ๐Ÿ‡บ๐Ÿ‡ธ๐Ÿ‡ฎ๐Ÿ‡ณ
14 days
Post-mortem confirmation is done using direct fluorescent antibody (DFA) testing of brain tissue which remains the gold standard due to its high sensitivity and specificity. Saliva intermittently contain virus but not reliably enough . Blood usually contains no detectable virus.
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@GyanCMehta
Gyan C Mehta ๐Ÿ‡บ๐Ÿ‡ธ๐Ÿ‡ฎ๐Ÿ‡ณ
14 days
Ans: 1)- Rabies virus is neurotropic โ€” it primarily resides and replicates in nervous tissue, not blood. Ante-mortem testing in animals is unreliable because viral load in accessible fluids like saliva is intermittent and low.
@gvenugopalan
Venugopalan Govindan
15 days
@theskindoctor13 IAQ (Infrequently Asked Questions) on Rabies. 1. Why is Rabies not diagnisable from the saliva/blood of animals ante mortem and rabies confirmation is only post mortem in the animals?. 2. Why are so many complicated tests required to diagnose and confirm rabies ante mortem in.
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@GyanCMehta
Gyan C Mehta ๐Ÿ‡บ๐Ÿ‡ธ๐Ÿ‡ฎ๐Ÿ‡ณ
16 days
RT @AdityaRajKaul: Dr. S. Jaishankarโ€™s strong message against terrorism at #QUAD Meeting in Washington DC: โ€œA word about terrorism in the lโ€ฆ.
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